Gavin Stamp is an architectural historian and Apollo columnist

Stereocard depicting Balmoral Castle from the north-west (1863), George Washington Wilson (1823–90) & Co., Aberdeen. © National Museums Scotland
The De La Warr Pavilion at Bexhill-on-Sea, opened in 1935 and successfully restored in 2003–05.
The National Trust is launching an international design competition to restore Clandon Park, the 18th century Palladian house that was gutted by fire in 2015