* Bonn is a federal city of Germany and the capital of the country for 40 years. The residence of the Electors. The monastery is St. Martin's Basilica on Munster Square. The Old Town Hall on the Market Square. The Princes University of Bonn of the 19th century and its Nobel laureates of the 20th and 21st centuries. The old customs house of Bonn. Bonn's most famous monuments, churches, fountains and museums. Beethoven's City: significant places, little-known and piquant details of the great composer's life