During the 15th century the centre of the square was home to Warsaw’s Town Hall, though this was pulled down in 1817 and never replaced. Today, it's most famous feature is Warsaw’s best-loved monument and the city's defining symbol - Syrenka. Designed by Varsovian sculptor Konstanty Hegel, Warsaw's warrior mermaid dates back to 1855, and is actually an exact copy of the original, which can be seen in the Museum of Warsaw. This busty vixen's form graces every bus, tram and coat of arms you'll find in the capital.
In winter the square is turned into a large ice rink, and in December it hosts part of Warsaw's Christmas market.