Vilnius Cathedral square is the main square of the Vilnius Old Town, right in front of the neo-classical Vilnius Cathedral. It is a key location in city's public life, situated as it is at the crossing of the city's main streets and reflecting the city's diversity. Regularly held at this site are fairs and gatherings of townspeople, military parades, religious and official public events, attractions and large concerts, New Year’s salutes and exhibitions. It is not merely the most lively and important location in the city, but is also one of the most significant and widely known symbols of Lithuania.

The first wooden fortifications were built by Gediminas, Grand Duke of Lithuania. The first brick castle was completed in 1409 by Grand Duke Vytautas. The three-floor tower was rebuilt in 1933 by Polish architect Jan Borowski. Some remnants of the old castle have been restored, guided by archaeological research.