Fodor's Expert Review David Zwirner

This is just one of several influential New York gallerists to open a London space in Mayfair in recent years, a trend that has revitalized an area that's been losing ground to edgier neighborhoods like Bethnal Green, Hackney, and Peckham. Zwirner's roster contains the likes of Bridget Riley and Jeff Koons, and modern masters such as Piet Mondrian are exhibited in this grand converted town house, too.