Museum Island is located on the northern half of a historically-significant island in the Spree River that runs through Berlin. The island takes its name from the five Berlin State Museums that reside in the area - the Altes Museum, the Bode Museum, the Alte Nationalgalerie, the Neues Museum, and the Pergamon Museum. Museum Island was designated a World Heritage Site by UNESCO in 1999. The island's first museum was erected in 1797, and the whole area was designated specifically for art and science by King Frederick William IV of Prussia in 1841. An assemblage of spectacular historical monuments, the Museum Island is a stunning heritage hub.