 Complete the following phrase:  The museums permanent exhibition covers various aspects of Dresdens history, including its cultural and business history. More than 1000 exhibits are on display in four rooms. The exhibitions cover more than 1800 square metres over several floors. Twenty media stations also provide information about Dresdens development over the last 800 years. Various educational activities are also on offer. Three models of the city, the oldest city seal dating from 1309, busts from the Busmannkapelle and documents and objects from the destruction of the city by the Anglo-American 