St. George s Basilica - "The red church with two towers behind St. Vita Cathedral is St. George's Cathedral. St. George's Cathedral is the best preserved Roman-style building in Czech Republic. It was expanded many times after its completion in 920. The last time was in the late 19th century and early 20th century. The cornerstone and two minarets of the church have been preserved since the 10th century. Saint George's Monastery is the first monastery in Bohemia. It was demolished in the 18th century and rebuilt as a military camp. It is now the National Gallery. It collects Czech art works from the 14th to 17th centuries, including Gothic art, Renaissance and Baroque paintings of different periods.