Dark Sky® Alqueva was the first site in the world to receive the official certification as a Starlight Tourism Destination, awarded by the Starlight Foundation. This international certification is institutionally supported by UNESCO, UN Tourism (formerly the World Tourism Organization – UNWTO), and the Instituto de Astrofísica de Canarias, globally recognized authorities in science, culture, and sustainable tourism.
Today, the Dark Sky® Alqueva territory includes municipalities in both Portugal and Spain, making it the world’s first Transboundary Starlight Destination, symbolically reinforcing that the night sky knows no administrative borders.
A Starlight Tourism Destination is a region characterized by extremely low levels of light pollution, high atmospheric quality, and an active commitment to protecting the night sky. These locations provide exceptional conditions for astronomical observation and for the development of sustainable astrotourism.
In a European context where increasing light pollution prevents millions of people from clearly observing the Milky Way, Alqueva preserves high-quality night skies, allowing visitors to see our galaxy with the naked eye for much of the year.
The certified area covers more than 10,000 km² around the Great Lake of Alqueva, including eleven Portuguese municipalities — Alandroal, Barrancos, Estremoz, Moura, Mourão, Redondo, Reguengos de Monsaraz, Portel, Évora, Mértola, and Serpa — as well as adjacent Spanish municipalities.
Beyond its outstanding sky quality, the region is distinguished by its rich natural and cultural heritage. Millennia-old megalithic monuments testify to the ancestral relationship between human communities and celestial cycles, creating a symbolic continuity between past and present in the contemplation of the cosmos.
The Official Dark Sky® Alqueva Partner Network includes rural tourism units and specialized operators who have adapted their services to meet the specific needs of astrotourism visitors, offering:
The region therefore provides an integrated offering that combines science, nature, culture, and well-being.
Dark Sky® Alqueva is managed by the Dark Sky® Association. The names Dark Sky®, Dark Sky Alqueva®, and Dark Sky Patrol® are registered trademarks protected within the European Union.
This is a territory where the preservation of the night sky is understood as an environmental, scientific, and cultural commitment, offering visitors an authentic experience under one of Europe’s darkest skies.
The Starlight Tourism Destination certification requires compliance with rigorous sky quality parameters:
These parameters position Dark Sky® Alqueva among the European regions with the highest night sky quality.
The Starlight Foundation was established following the Starlight Initiative, launched in 2007 at the proposal of the Instituto de Astrofísica de Canarias, with the support of international organizations.
Its mission focuses on defending the universal right to observe the stars and promoting the night sky as scientific, cultural, environmental, and tourism heritage. Its main objectives include:
Starlight Foundation: https://www.fundacionstarlight.org/
