With Richard Meier’s Rachofsky House entering a new chapter, its most revealing legacy is the way Cindy and Howard Rachofsky used architecture to keep a major contemporary collection in motion.

Before Art Basel Paris arrives in October, September brings a concentrated Paris season spanning Kerry James Marshall, Cezanne, Christian Marclay, Paris Design Week, Fine Arts Paris and a gallery-history exhibition in the Marais.

Gagosian’s Damien Hirst solo booth at Frieze Seoul is less a comeback than a compact map of a highly segmented market—placing Spots, Spins, cabinets, Colour Space, Secret Gardens and Treasures side by side for collectors.

September gives London collectors an unusually useful head start: museum shows in their final weeks, important gallery openings, Frieze Sculpture in Regent’s Park and a major Magritte exhibition before the October fairs arrive.

Four early Yayoi Kusama watercolours preserved in Joseph Cornell’s archive reveal how friendship, receipts and archival care can transform provenance into art history.

At Reina Sofía, Felix Gonzalez-Torres’s candy spills, paper stacks, curtains and light strings reveal why participation can be generous without ever becoming easy.