Observatori de l'Ebre

The Ebro Observatory is a research facility and astronomical observatory situated on elevated ground near Roquetas in Catalonia. The site focuses on weather measurements and studies how solar activity influences Earth's climate and atmosphere.

The facility was established in 1904 and is among the oldest continuously operating observatories worldwide. It belongs to the Royal Academy of Science and Arts of Barcelona and holds extensive records of atmospheric and weather data accumulated over more than a century.

The facility bears the name of a major river in the region and holds deep roots in local identity as a keeper of scientific knowledge. Visitors can sense how the site represents a bridge between ancient curiosity about the cosmos and modern environmental understanding.

Visitors should plan ahead, as the facility is primarily a research center and not always open to the public. It is best to check availability and any guided tour options before traveling to the site in Roquetas.

The site maintains one of the world's longest unbroken collections of weather data stretching back to the early 1900s. These historical records allow scientists today to detect long-term climate patterns and atmospheric shifts that would otherwise be impossible to trace.

Location: Roquetas

Inception: 1904

Elevation above the sea: 52 m

Address: C. Horta Alta, 36-38

Website: http://obsebre.es/ca

GPS coordinates: 40.82050,0.49305

Latest update: December 14, 2025 16:41