The MUMOK has one of the exceptional collections of contemporary art in Central Europe. It exhibits mainly Nouveau Réalisme, American pop art, and concurrent Continental movements such as the hyperrealism of the 1960s and 1970s. In recent years the Museum has acquired a collection of pieces from the era of Vienna Actionism, Austria's most substantial contribution to the development of avant-garde in the '60s. The museum features five exhibition levels, three above ground, two underground. In 2013, two exhibits made international headlines in the art world. First, "The Personal Effects of Kim Dotcom" displayed the seized art collection of the assumed internet criminal, highlighting one of the most important legal discussions of the moment. And the much-debated "and Materials and Money and Crisis" included Terry Atkinson and Sam Lewitt, tackling the ways in which contemporary art approaches capital.