Union Square is the oldest historical square in Timișoara. It is home to outstanding Baroque buildings such as the Baroque Palace, the Roman Catholic Church, the Serbian Orthodox Cathedral, the Palace of the Serbian Orthodox Diocese and the Monument of the Holy Trinity, located in the city center. Over the years, it has also been called Great Square, Cathedral Square and Losonczy Square (named after Count Stefan Losonczy, who was killed during the Turkish conquest of the city in 1552). It was given the name Union Square in 1919, because it was here that the Romanian troops marching into Timișoara stopped.