Paintings, sculpture, works on paper, and art installations from the mid– to late 20th century are showcased in this striking museum which opened in 2009. Udo and Anette Brandhorst donated their collection of contemporary art, assembled over a lifetime, to this museum. Constructed with sustainable “green” features, the building is the most avant-garde museum in the city, with an intriguing façade clad in multi-colored ceramic rods. On display are works by American artists including a large collection of works by Cy Twombly, the American artist celebrated for his calligraphic-style graffiti paintings. Other artists featured include Andy Warhol, Jean-Michel Basquiat, and Alex Katz; the controversial British artist Damien Hirst, famous for his series of dead animals preserved in formaldehyde; the German painter Sigmar Polke; and an unusual collection of books illustrated by Picasso.