The neoclassic building of the Observatory is situated on the hill of "Nymphs" at Thission, facing the Acropolis and belongs to the Astronomical Institute, the oldest research center of Greece. It was founded in 1842, after a donation from the national benefactor George Sinas. The astronomical observations started on September 1847. At the foot of the hill is shown Agia Marina church.
More information: www.astro.noa.gr/History/h_synopsis.htm