The best photos of the total solar eclipse of 2026 in Spain: the images of a historic day

To organize public astronomical observation events in Spain (field trips, urban meetups with telescopes, outdoor outreach activities) there is no specific "single law," but rather a set of permits depending on the location, type of activity, and capacity. In practice, authorizations combine use of space permits (municipality, environment, coasts, or forests), regional regulations on public shows and recreational activities, and rules on safety, environment, and light pollution. Below is an overview to guide you on what to request and from whom, with real examples of applicable state and regional regulations as a framework.

1. Use of public domain and land

The first filter is where the event takes place:

• Public roads, squares, urban or rural municipal parks: authorization or notification to the municipality is required for occupation of local public domain. Details are specified in municipal ordinances, which usually require a report of the activity, schedule, estimated capacity, and often liability insurance.
• Beaches and coast: in maritime-terrestrial zones, occupation is subject to coastal legislation and authorizations from Coastal Demarcations; the state administration regulates fees and authorizations, as illustrated by the Order of October 30, 1992 on occupation fees or the Resolution of January 26, 1990 on authorizations in the protection servitude zone.
• Public forests, reservoirs, forested areas: recreational use is subject to forest legislation and regional natural space regulations; authorization is usually processed through the forestry service or natural spaces authority.
• Protected natural areas and national parks: Law 42/2007 on Natural Heritage and Biodiversity and its developments (e.g., the Master Plan of the National Parks Network) apply. Usually, a specific public use authorization is needed that assesses impacts on fauna, vegetation, night transit, etc.

2. Public shows and recreational activities

If the event is open to the public, announced, and somewhat organized (capacity, reservations, paid entry or not), it falls under the category of public show or recreational activity, mainly regulated by regional laws:

• In Andalusia, Law 13/1999 on Public Shows and Recreational Activities and Decree 195/2007 on occasional activities regulate authorizations, technical conditions, schedules, and sanctioning regime.
• In Catalonia, Law 11/2009 on public shows and recreational activities establishes that, as a general rule, these events require a municipal license or, in specific cases, authorization from the Generalitat.
• In the Community of Madrid, Law 17/1997 on Public Shows and Recreational Activities defines the licensing regime, capacities, schedules, and responsibilities, coordinated with municipal ordinances.

At the state level, Royal Decree 2816/1982, General Regulation of Police of Public Shows and Recreational Activities acts subsidiarily today, especially regarding safety and public order, although it is partially repealed and replaced by regional regulations and the Basic Self-Protection Standard.

3. Environment and light pollution

For astronomical observation, protecting dark skies is key:

• Law 34/2007 on air quality and atmospheric protection sets the basic framework for emissions and atmospheric pollution, within which autonomous communities and municipalities can approve specific rules on outdoor lighting and light pollution.
• Royal Decree 1890/2008, Regulation on energy efficiency in outdoor lighting installations aims to reduce irrational energy use and light pollution nationwide, conditioning how outdoor lighting that may affect events must be designed.
• In the Canary Islands, Law 31/1988 on protection of the astronomical quality of IAC observatories and its development regulation, approved by Royal Decree 243/1992 (amended by Royal Decree 580/2017), impose strong restrictions on outdoor lighting, emissions, and radiofrequency around observatories.
• An example of regional environmental lighting regulation is Law 6/2001 of Catalonia on environmental regulation of lighting for night environment protection, partially in force, which conditions intensity, orientation, and schedules of outdoor lights.

Additionally, many municipalities have specific ordinances on light pollution or public lighting that may impose additional requirements or facilitate reducing lights during the event.

4. Safety, self-protection, capacities, and insurance

Depending on capacity and type of facility, the following may be required:

• Self-protection plan or measures, in line with the Basic Self-Protection Standard (Royal Decree 393/2007), when the event gathers many people or is located in places with specific risks (sports facilities, enclosed venues, etc.).
• Show police measures (access control, emergency exits, signage, security personnel), derived from the state show regulation and developed by the cited regional laws.
• Liability insurance covering personal and material damages to attendees and third parties, expressly required by many regional show laws and municipal ordinances.
• Capacity limits and, if applicable, access control systems, which regional laws (e.g., Catalan Law 11/2009 or Andalusian Law 13/1999) link both to safety and neighborhood coexistence (noise, nighttime disturbances).

5. Operational procedure scheme

In practice, for a typical event (public telescope night) the steps usually are:

• Determine if the space is municipal, regional (public forest, natural park), or coastal and request public domain use authorization from the owner.
• Consult the applicable regional law on public shows and recreational activities and process, before the municipality or autonomous community, the corresponding license, prior communication, or responsible declaration.
• Review local and regional regulations on light pollution and outdoor lighting to coordinate possible shutdowns or dimming of nearby public lights.
• Contract liability insurance and, if capacity is significant, prepare a basic safety/self-protection plan with signage, first aid, evacuation routes, and coordination with local police and emergency services.

No further information is available in the consulted sources about additional specific requirements for this type of event; many concrete details (deadlines, fees, documentation) depend on the autonomous community and municipality where the activity is organized.

State regulations position the State Meteorological Agency (AEMET) as the national meteorological service, with clear competencies in atmospheric observation, forecasting, and warnings for civil protection, but without expressly assigning astronomy or celestial body observation functions. In contrast, the National Geographic Institute (IGN) is linked to the astronomical and geodetic field mainly through specific bodies and centers (Royal Observatory of Madrid, National Astronomy Commission, Spanish Commission of Geodesy and Geophysics), although their functions are not exhaustively detailed in the consulted excerpts. In practice, observation and dissemination of astronomical phenomena (eclipses, ephemerides) is not exclusively reserved for either entity and is organized more as a scientific-technical and outreach activity than as a strictly regulated competence. The regulations do clarify, however, that AEMET is the main actor in warnings and monitoring when there is impact on weather, climate, or public safety.

AEMET: atmospheric monitoring and civil protection support

The legal core of AEMET is in Royal Decree 186/2008, which approves its Statute. It defines the Agency as the body responsible for the State's meteorological policy and assigns it, among others, the following functions (competence articles reproduced in excerpts):

• Preparation, supply, and dissemination of meteorological information and forecasts of general interest for citizens nationwide, and issuance of warnings and forecasts of meteorological phenomena that may affect the safety of people and property.
• Provision of meteorological services supporting air and maritime navigation and supply of meteorological information for the Armed Forces, national defense, and Security Forces and Corps.
• Continuous monitoring of meteorological and climatic conditions and the physical and chemical structure and composition of the atmosphere over national territory.
• Maintenance and updating of the historical record of meteorological and climatological data and observation networks and necessary technical systems.
• Conducting studies and research in atmospheric sciences and participation in R&D projects related to weather, climate, and modeling.
• Representation of the State in international meteorology and climate organizations (World Meteorological Organization, EUMETSAT, etc.) and compliance with data exchange commitments.
• Training, documentation, and communication activities in meteorological and climatological matters.

From the civil protection perspective, these provisions translate into AEMET being the official provider of warnings of hazardous meteorological phenomena that feed into state civil protection plans (e.g., floods or volcanic risk, according to resolutions such as the State Civil Protection Plan against Volcanic Risk, published by [link]).

Does AEMET have astronomical competencies?

The relevant fragments of AEMET's Statute mention atmospheric sciences, meteorological observation and forecasting, and climate study and modeling, but do not mention astronomy or observation of astronomical phenomena (eclipses, transits, comets, etc.). There is also no specific reference to "space phenomena" beyond international collaboration in Earth observation programs.

Therefore, based on the AEMET Statute, its role regarding astronomical phenomena is limited to what may relate to the atmosphere (e.g., effects on incident solar radiation, climatology, etc.) and provision of information to civil protection, but it is not configured as an astronomical authority nor as a body responsible for ephemerides or astronomical outreach. Any outreach material on eclipses it may produce falls within its general public information functions, not within a specific astronomical competence.

IGN, astronomy, and geodesy

In the case of the National Geographic Institute, the references found are more indirect but point to its link with astronomy and geodesy:

• Resolution of October 27, 2010 of the National Geographic Information Center (an autonomous body linked to IGN) sets public prices applicable to visits and dissemination of the scientific-technical activities of the Royal Observatory of Madrid. This shows an institutional role of IGN/CNIG in disseminating the observational activity of the Royal Observatory, closely linked to astronomy.
• The astronomical field is also organized through the National Astronomy Commission, regulated by Royal Decree 587/1989 and amended by Royal Decree 663/2001. The titles of these regulations indicate it is the body responsible for coordinating astronomical activity nationally, although the available excerpts do not detail the specific organizational relationship with IGN.
• The Spanish Commission of Geodesy and Geophysics, regulated by Royal Decree 401/2020, coordinates geodesy and geophysics, fields in which IGN is a central actor. Again, articles are not transcribed, but the title itself links IGN with geodesy (including its spatial dimension).

Overall, the consulted regulations place IGN, through the Royal Observatory of Madrid and these collegiate bodies, within the institutional ecosystem of astronomy and geodesy, including scientific-technical dissemination and scientific coordination activities. However, no provision as explicit as AEMET's Statute is available assigning IGN, in detail, the competence of "observation and dissemination of astronomical phenomena" for the public or civil protection.

Effective division of functions

With the available regulatory information:

• AEMET is the legally competent body for atmospheric monitoring, weather forecasting, climatology, and issuing warnings of hazardous meteorological phenomena integrated into civil protection plans.
• IGN and related bodies (Royal Observatory of Madrid, CNIG, astronomy and geodesy commissions) are the state reference in observational astronomy and geodesy, including dissemination of their scientific-technical activities.

However, the analyzed regulations do not establish an exclusive reservation or closed division for the "dissemination of astronomical phenomena"; rather, each institution's role is inferred from its scientific fields: AEMET from atmosphere and climate, and IGN from astronomy and geodesy. No further information is available in the consulted sources clarifying a specific mandate on ephemerides, eclipses, or other astronomical phenomena directly related to civil protection.

In Spain there is no specific law on solar eclipses, but the protection of natural spaces during episodes of high attendance (eclipses, meteor showers, pilgrimages, mass tourist events, etc.) is articulated through a set of basic state regulations on environment, coasts, public safety, and civil protection. These regulations allow administrations to limit access, set capacities, regulate activities, and even temporarily close sensitive areas, especially within protected spaces and Natura 2000 Network.

Law 42/2007 on Natural Heritage and Biodiversity

The general pillar is Law 42/2007, of December 13, on Natural Heritage and Biodiversity (text in the BOE), amended by Law 33/2015 (2015 amendment). This law:

• Defines and organizes protected natural spaces and Natura 2000 Network spaces.
• Establishes Natural Resource Management Plans (PORN) and other planning instruments that set permitted, prohibited uses and public use conditions.
• Recognizes that these plans prevail over other territorial planning instruments, allowing restrictions on access or activities when natural values are at risk.
• In the case of Natura 2000 Network, requires setting "necessary conservation measures" including regulatory and administrative measures that may limit uses and capacities to avoid deterioration.

In practice, facing an eclipse expecting extraordinary attendance at a natural park or Natura 2000 space, the legal basis to restrict zones, control capacity, or divert visitors is usually in the PORN, management plans, and general authorizations of this law.

Master Plan of the National Parks Network

For national parks, the key instrument is Royal Decree 389/2016, of October 22, approving the Master Plan of the National Parks Network (Master Plan).

This Master Plan develops, among others, objectives and guidelines on public use:

• Explicitly establishes the objective to ensure enjoyment subordinated to conservation.
• Defines zonings such as restricted use zone and moderate use zone, where:
  • In restricted use zones, public access is limited to authorized trails and new paths or tracks are prohibited, with strict transit regulation possible.
  • In moderate use zones, access is allowed but aimed at conserving values and activities and flows may be conditioned.
• Provides for installation of signs, barriers, and visitor control and safety instruments, which in high attendance situations serve to close areas or channel people.

Based on this, managing administrations of each national park can approve specific access plans for singular events (such as a privileged visible eclipse) limiting quotas, schedules, or visitable zones.

Environmental assessment of infrastructures and associated devices

Law 21/2013, of December 9, on environmental assessment (Environmental Assessment Law), amended by Law 9/2018 (2018 reform), unifies the assessment of plans, programs, and projects.

Although it does not regulate eclipses as such, it requires environmental assessment of certain infrastructure or conditioning projects that may be promoted to attend large gatherings (new parking lots, accesses, observation platforms, etc.), especially if they affect protected spaces or Natura 2000. This assessment is the preventive filter to avoid irreversible impacts from high visitor pressure.

Coastal and shoreline protection

If eclipse observation concentrates on beaches or cliffs, Law 2/2013, of May 29, on protection and sustainable use of the coast and modification of Law 22/1988, on Coasts (Coastal Law) is relevant.

This law strengthens protection mechanisms of the maritime-terrestrial public domain (beaches, maritime-terrestrial zone, and servitudes), establishing:

• A framework of preventive protection of the coast, with special attention to urban and tourist pressure.
• The possibility to impose environmental conditions on authorizations and concessions, and to suspend local acts that harm the integrity of the public domain.

On this basis, use limitations can be set on beaches or dunes during peaks of massive attendance to safeguard fragile habitats.

Public safety and civil protection in large gatherings

From the public order perspective, Organic Law 4/2015, on protection of citizen security (LO 4/2015) provides coverage to order and, if necessary, restrict gatherings of people in public or natural spaces when safety may be affected, including the possibility to sanction breaches of circulation or route restrictions in public acts.

Complementarily, Law 17/2015, of July 9, on the National Civil Protection System (Civil Protection Law) configures emergency planning, including:

• Preparation of special or specific plans for risks derived from large human gatherings.
• Coordination among administrations and services (including possible intervention of the Military Emergency Unit).

In an eclipse attracting thousands to a park or specific site, this law supports approval of special civil protection devices that may translate into access controls, maximum capacities, excluded zones due to risk or environmental fragility, etc.

Role of autonomous communities and detailed regulation

Finally, almost all this state regulation is basic legislation. Autonomous communities develop:

• Their own laws on natural spaces and biodiversity.
• Use and management master plans, PORN, and self-protection plans for each space.

It is in these regional instruments and in specific resolutions of managing bodies where precise protection measures are established for each high attendance event like an eclipse: visitor quotas, prior reservations, temporary trail closures, prohibition of parking outside designated areas, etc., always supported by the mentioned state laws.