Observatory
Tartu Old Observatory
Built as part of Tartu University in 1810, this intriguing observatory on Toomemägi is a must for fans of astronomy and the history of scientific discovery. The sober, studious-looking facility, topped with a moving observational tower, houses some of the most famous artefacts of 19th-century astronomy, all displayed in perfect order. You can climb the tower, where a huge Zeiss Refractor remains in place; there's a basement exhibition on seismology; and interactive-learning displays await in the Western Hall.