Olomouc once belonged to the best fortified cities in Moravia. The compact, medieval defensive walls initially surrounded the cathedral hill, and eventually the entire Old Town. At the end of the 19th century, most of the fortifications were demolished. Only a few fragments remain.
In the eighteenth and mid-nineteenth centuries, the former city walls were included in the fortifications of the Olomouc Fortress. In the second half of the nineteenth century, due to the development of military techniques, the fortress turned out to be outdated. Then the demolition of walls began. In their places parks were created that surround the city center. Fragments of fortifications can be seen today above the Bezrucovy Sady Park. There is also the only preserved city gate, called Jewish.