The scion of a famous publishing family, Frieder Burda spent nearly 4 decades amassing this amazing collection of some 580 works of modernist and contemporary art, housed in airy glass premises designed by New York architect Richard Meier. German expressionists, from Ernst Ludwig Kirchner to Max Beckmann, are well represented, and American abstract expressionists Willem de Kooning, Mark Rothko, and Jackson Pollock also make a showing. Picassos, sculptures by Joan Miro and Niki de Saint-Phalle, and canvases by such contemporary artists as Anselm Kiefer round out this collection that is all the more extraordinary because you don’t expect to come upon so many modern masterpieces in a place as old world and out-of-the-way as Baden-Baden. The building itself is an attraction, a stunning white cube surrounded by reflecting pools and parkland.