A Paris brothel awash in sensuous reds. Boris Grigoriev, Entrez! 1913. Moscow, Pushkin State Museum of Fine Arts. ©FineArtImages/Leemage.

A Paris brothel awash in sensuous reds. Boris Grigoriev, Entrez! 1913. Moscow, Pushkin State Museum of Fine Arts. ©FineArtImages/Leemage.