St. Vitus Cathedral is the by far most known sacral building in Prague. Dominating the Castle and the city skyline, it can be considered the Prague trademark. It is the masterpiece of the high Gothic style, featuring large rosetta above the main entrance, operne pilire and coloured glass windows. If you go inside, concentrate on the area behind altar - this is the oldest and most interesting part of the cathedral, initiated by King Charles IV in 14th Century. As the Czech Kingdom was not always prosperous during last 1000 years, the cathedral was completely finished only in the late 19th century by adding the second front tower. Nevertheless St. Vitus is definitely the best place to admire the Czech Gothics style of Petr Parler and his followers. The only other comparable building is the St. Barbora Cathedral in Kutna Hora. St. Nicolaus Church Lesser Town is dominating the Lesser Town Square, though partially integrated into the medieval campus of Charles University. It is the largest Baroque church in Prague, famous for its organs and concerts. Church of Lady Maria Snow Relatively unknown and overlooked church located in the Franciscaner Gardens next to Venceslav Square was built by King Charles IV as the basis of the largest crown cathedral of Czech Kingdom. The section finished is just the baptisterium while the whole cathedral should have occupied space appeoximately to the Narodni trida subway station, making it one of the largest in Europe. However this plan was abandoned by the following kings. Rotonda of Saint Cross in Divadelni Street is one of the three preserved original Roman sacred buildings dated back to the 10th century. The other two can be found on Vysehrad and in Predni Kopanina. Basilica of St. George counts to the oldest preserved sections of Prague Castle. Most of the Czech knights, kings and royal family members are buried in its tomb. It is one of the few original Roman style churches in Czechia which was not replaced during Gothic times.