Bremen's town hall is regarded as the jewel in the crown of the historical market square. The Upper Hall, where the city council used to convene, is the most magnificent ceremonial venue in Bremen. The model ships that hang from the ceiling bear witness to the importance of commerce and maritime trade for the city. Their miniature cannons can even be fired if the occasion demands. At the start of the 20th century, the grand old town hall was in need of an extension. Designed by architect Gabriel von Seidel, the modern building blends seamlessly with the medieval section to form a harmonious whole.