What difference does it make if it's behind closed doors?

What difference does it make if it's behind closed doors? featuring unidentified woman by anonymous artist, 1950s/60s & 'Doors of Dublin' photographed by Liam Blake  

Roll up! Roll up! It only takes a second

Roll up! Roll up! It only takes a second featuring 'La Blouse Roumaine' by Henri Matisse, 1940 & License Photo Studio in New York by Walker Evans, 1934

It's the posh ones you wanna watch

It's the posh ones that you wanna watch featuring London prostitute's publicity card, 2015 & portrait of Vsyevolod Meyerhold by Boris Grigoriev, 1916  

Moscow still life

Moscow still life featuring Giorgio Morandi's atelier in Bologna, photo by Luigi Ghirri, 1989-90 & Rossia Hotel, 1980s