The English collector and patron Pauline Karpidas doesn’t just decorate; she creates worlds. Her spacious flat near London’s Hyde Park, where she lived for the past 15 years, was a surrealist dreamscape of clashing patterns and colors that somehow enhanced one another, with objects ranging from ancient to contemporary. It was a showplace for paintings by Magritte, de Chirico, Tanguy, and Carrington, hung salon-style above daring designs by Mattia Bonetti, André Dubreuil, and about 35 pieces of furniture and sculptures by the husband/wife designers Claude and François-Xavier Lalanne. Grayson Perry ceramics sat atop a Bonetti bookshelf. An ancient Roman marble head was displayed next to a blue Magritte Tête that once belonged to the artist’s wife.