Church of the Virgin Mary (Prague Castle)
The Church of the Virgin Mary was the first known church built in the current area of the Prague Castle. The structure was built by Prince Borivoj I between 882 - 884, making it not only the oldest church in Prague Castle but also the second oldest in Bohemia. The church was rebuilt after a fire in the 11th century, but was eventually destroyed again in the 13th century and not rebuilt; it is known today due to excavations directly under extant administrative buildings. The surviving foundations indicate a rectangular nave and a semicircular apse; archaeological surveys uncovered tombs for members of the royal P?emyslid dynasty which was prominent in Bohemia during the early Christian era.