Modern architecture is the most common twenty-first century architectural style. Modernist and postmodern architecture, which dominated the twentieth century's second half, offers a modernist alternative. Modern architecture is a global phenomenon; major new buildings were built in China, Russia, Latin America, and particularly the Persian Gulf Arab countries. Some of the structures feature concrete components covered with glass or aluminum screens, extremely asymmetric façades, and sections hanging over the pavement. The Isbjerget, which translates as "iceberg" in Danish, is a four-building complex in Aarhus, Denmark that has 210 apartments, both rented and owned.