What caught my eye this month is "The Sisters" (below), a hypnotically luminous 1991-93 abstract work by Brice Marden, one of America's leading artists and the subject of a new book, "Brice Marden: Phaidon Focus" (Phaidon).

WSJ: A Flower Arrangement Inspired by Art

The only real evidence of the De Soles's worldly life is their art collection, which features works by Cy Twombly, Brice Marden and Mark Rothko, alongside modern Italian artists such as Giorgio Morandi, Piero Manzoni, Lucio Fontana and Alighiero Boetti.

WSJ: The House That Gucci Built