Set in two massive buildings, the National Gallery of Art houses a staggering art collection (over 100,000 objects), spanning the Middle Ages to the present. The neoclassical west wing houses European art through the 1800s, with an excellent range of Italian Renaissance works (including the continent's only da Vinci); the geometric east wing, designed by IM Pei, showcases modern art, with works by Picasso, Matisse, Pollock and a massive Calder mobile over the entrance lobby. An underground passage connects the two buildings.