St. Vitte Cathedral, located in Prague Castle, is the place where emperors of all dynasties held coronation ceremonies. It has the reputation of "architectural treasure" and is a wonderful example of Gothic architecture. Among them, there are many tombs of Bohemian kings. It is the largest and most important church in Czech. The first church situated at St. Witt's Church today is an early Roman circular building built in 925 by the Duke of Bohemia, Watslav I. It was expanded into a Roman Church in 1600. In 1344, Charles IV ordered the construction of a Gothic church on the basis of the original church, which was completed in the early 20th century. The church is huge and has many treasures worth visiting.