National Observatory of Athens (Thissio Visitor Center)

GREECE Athens Hill of the Nymphs, Thission

Who visits us?

- People who are interested in Astronomy and Science. - Parents with their children who are looking for an inspiring and pleasant educational experience - Tourists interested in less crowded museums, close to nature and having a wonderful view

What to do here?

Visitors have the opportunity to visit the historic Sinas building, the first building of the National Observatory in Athens, situated on the hill of the Nymphs, just across from the Acropolis and next to the hill of Pnyx. Founded on 1842 and designed by the famous Danish architect Theophil Hansen, Sinas building hosts the meridian telescope of the National Observatory, supporting time measurement service for the Greek state. There we also find the astronomical library of the observatory with numerous scientific volumes dating back to the 16th century as well as a collection of historic scientific instruments dating back to the 19th century and an operational model of the Antikythera Mechanism. Visits include observation (weather permitted) through Doridis telescope, a 1902 40cm refractor placed on the hill of Pnyx.

Top 3 reasons to visit
  • Star gazing
  • The historical buildings, scientific instruments and the replica of the Antikythera Mechanism
  • The astonishing view of Acropolis and the city center


  • Email National Observatory of Athens (Thissio Visitor Center)
  • +30210349036

Our team is here and happy to help!