Heidelberg also has a cultural focus to offer. There are numerous concerts of different styles, festivals, cabaret events, readings, lectures, dance and theater performances. The Heidelberg Castle Ruins are the setting for the Heidelberg Castle Festival, an open-air theater festival. Three times each summer, the castle is illuminated with fireworks. The castle ruins also house the German Pharmacy Museum, where pharmacy furnishings from the Baroque and Biedermeier periods are on display. In total, there are about 20 museums, art collections and exhibition halls. The history of the city and region comes alive in the Kurpfälzisches Museum of the City of Heidelberg, which is located in Palais Morass, a baroque building in the Old Town. The Old Bridge is another landmark of the city. It was first mentioned in a document in 1284. In its present form, it was built in 1788. According to a 2010 nationwide location ranking, Heidelberg is one of the most creative cities in Germany. This is particularly true in the fields of literature, architecture and design.