The campaigners object to the loss of disabled parking spaces as Wiltshire Council plan to create a "European-style piazza" at the centre of the city, claiming the eight spaces in the Guildhall Square are the only places within 250m of the Library, Post Office, and banks.
Inside, there is about 3, 000 square feet, with a 28-foot-wide octagonal double-height living room with a library at one end and doors opening out to a terrace on the other.