A newcomer to the retail market but a seasoned vet in the realm of furniture design, Vitra is the source of many of mid-century modernism's most iconic pieces. The S-curved molded plastic Panton chairs, George Nelson's wall clocks and "marshmallow" sofa, the Eames chairs -- they're all here. If you can't swing for the real thing, check out the miniature replicas. Subway: A, C, E to 14th St.