Complex sentence: The complex is located in southern part of the centre of the city, at 1 Sigismund I the Old Street, and its construction began in 1853, when Pila belonged to the German Empire.
Split into simpler sentences: The complex is located in southern part of the centre of the city, at 1 Sigismund I the Old Street. Its construction began in 1853, when Pila belonged to the German Empire.