Many of Ravensburg's monuments that most recall the town's wealthy past are concentrated on this central square. To the west is the 14th-century Kornhaus (Granary); once the corn exchange for all of Upper Swabia, it now houses the public library. The late-Gothic Rathaus is a staid, red building with a Renaissance bay window and imposing late-Gothic rooms inside. Next to it stands the 15th-century Waaghaus (Weighing House), the town's weigh station and central warehouse. Its tower, the Blaserturm (Trumpeter's Tower), which served as the watchman's abode, was rebuilt in 1556 after a fire and now bears a pretty Renaissance helmet. Finally there's the colorfully frescoed Lederhaus, once the headquarters of the city's leather workers, and now home to a café. On Saturday morning the square comes alive with a large market.