Lindau, Germany is a present town located on an island in Lake Constance connected to the mainland by a bridge and railway. The historic town covers an area of 0.68 square kilometers and has a population of around 25,000. Lindau was first mentioned in 882 and became an Imperial Free City in 1274. It has a long history dating back to Roman settlements in the 1st century. Lindau accepted the Protestant Reformation in 1528 and follows the Augsburg Confession. Elements from this present town that could inform a future floating town include its island location connected to the mainland, historic architecture and religious influences.