Lago Center shopping mall
Mon-Sat 9:30 to 20:00. Thursdays open late until 22:00
located in the south-west corner of Konstanz near the train station
Gigantic cross-border flea market
This flea market is several kilometres long and crosses the border to Kreuzlingen, Switzerland. The bulk of the market is in Konstanz though. It sells the usual flea market stuff, but is impressive due to its sheer size. It takes place in June or July 2-3 July 2011.