The rehousing of families from town centre slums to new council houses continued after World War II, though it slowed down to a virtual standstill after 1975.[citation needed] The face of the town centre began to change in the 1960s, with old developments being bulldozed and replaced by modern developments such as the St George's Shopping Centre, which opened in 1966, and the Fishergate Shopping Centre which was built nearly 20 years later. The remains of the Victorian town hall, designed by George Gilbert Scott and mostly destroyed by fire in 1947, were replaced by an office block (Crystal House) in 1962, and a modern-architecture Guild Hall opened in 1972, to replace the Public Hall.[28]