Church of St. Hastal (Castulus), Prag, Old Town

The church was originally Gothic, but for centuries it has undergone changes in the Renaissance and Baroque style.
Why is it mostly a park today around the churches inside the city? Once used to be cemeteries. But since the Enlightenment, cemeteries inside Prague have been disturbed. In the case of floods, they were in the flood area. So, after the flood, epidemics usually occurred ...
From the 18th century, therefore, it began to bury on the hills above Prague. For example, in Olšany.