Tartu linnamägi

The ancient fortress of Tartu (also the fortress of Tarbatu) was a fortress of Estonians in the territory of the current city of Tartu on Toomemäe, above the star tower of Tartu now. According to some historians, Tartu has consistently developed into the middle of the I millennium from an ancient fortress to a medieval city in the 13th century. The onetime location of the castle has changed beyond recognition due to the construction activities that took place in later centuries.