This monumental Baroque church was built from 1732 – 1737 according to plans by Kilián Ignaz Dientzenhofer. The side facing Pařížská Street has since been subsequently rebuilt during modern times. The interior, with its interesting lighting effects, is dominated by a crystal crown chandelier from the Harrachov glassworks, donated by russian Tsar to the Orthodox Church. Today the Czechoslovak Hussite Church uses the building is as a concert hall. The existence of the church is first mentioned in a Břevnov Monastery deed from 1273, but a St Nicholas chapel has stood at the marketplace since the Romanesque period. The church was reconstructed in the Gothic style in the 14th century, expanding to a three-aisle church with two towers, an attached rectory, school, cemetery and ossuary. The Jan Milíč of Kroměříž in around 1360 and later Matthew of Janow both preached at the church. The church belonged to the Hussite camp. French incendiaries set fire to the Old Town in 1689, the resulting conflagration completely destroyed the original architecture of St Nicholas. As a result, the decision was made to tear down the church and erect a new one in its place. One of the most renowned Baroque architects, Kilian Ignaz Dienzenhofer, was commissioned to build the new church.