sentences:  Today there is a large Zeppelin Museum in Friedrichshafen sited near the lake shore.In recent years the company ZLT Zeppelin Luftschifftechnik GmbH, also located in Friedrichshafen, is the constructor of small, semi-rigid airships designed by the Zeppelin firm, named (called "Zeppelin NT"), by using modern technology.These airships can be booked for sightseeing tours above Lake Constance.