One of the best things about Haffkrug Beach is that you can get there by bike. It's a great way to experience the beauty of the Baltic Sea coast while getting some exercise.
Anyone who travels to Lübeck will (not) pass by the Holsten Gate. This gate in the former city wall is a highlight on every tour to and through Lübeck.
Interesting market square with many nearby sights (Pranger, town hall, Niederegger, St. Mary's Church, etc.).
Weekly market days and the annual Christmas market are held on the square.