Toomemägi (Cathedral Hill) is the park-covered hill that rises directly behind the town hall square, and it is the most pleasant place to spend an hour in Tartu. The ruins of the 13th-century cathedral — massive Gothic walls open to the sky — house the University History Museum. Two observatory buildings from the early 19th century stand nearby: the original Tartu Old Observatory and the newer one built when the university's astronomy program expanded.
The hill itself is a landscaped park with walking paths, viewpoints over the town, and a small café near the top. The Angel's Bridge (Inglisild) and the Devil's Bridge (Kuradisild) cross the ravines on either side of the hill. A leisurely walk up from the square, through the ruins, and back down takes about 45 minutes.