With his longtime business and life partner, Pierre Bergé, the late fashion designer Yves Saint Laurent reopened his former atelier as a gallery and archive of his work in 2004. Unfortunately, YSL's private collection of dresses can be viewed only on private group tours booked in advance. What you can see here are exhibitions staged twice annually. Themes include painting, photography and, of course, fashion—such as a retrospective on couture maven Nan Kempner. Check the website to see what's on.