The main square was already the same size in the 13C. In the centre, the Trinity Column (Dreifaltigkeitssäule), erected by the States of Upper Austria in 1723, commemorates the town's escape from plague (1713), fire (1712) and Turkish invasion (1704). With its statues and cherubs in white Salzburg marble, it is a good example of the Baroque columns that were erected in many towns of the Habsburg Empire.