The visitor entrance is via an 1897 concert hall by J. M. Brydon. It is an eastward continuation of the Grand Pump Room, with a glass-domed centre and single-storey radiused corner. The Grand Pump Room was begun in 1789 by Thomas Baldwin. He resigned in 1791 and John Palmer continued the scheme through to completion in 1799. The elevation on to Abbey Church Yard has a centre piece of four engaged Corinthian columns with entablatures and pediment. It has been designated by Historic England as a grade I listed building. The north colonnade was also designed by Thomas Baldwin. The south colonnade is similar but had an upper floor added in the late 19th century. The museum and Queen's Bath including the "Bridge" spanning York Street to the City Laundry were by Charles Edward Davis in 1889. It comprises a southward extension to the Grand Pump Room, within which some parts of the 17th-century Queen's Bath remain.