The island of Lindau (map) is located in the east of the Obersee, and is the second largest island. On it is the old town and main railway station of Lindau.
The third largest island is Mainau (map) in the southeast of Lake Überlingen. The owners, the family of *Bernadotte, have set up the island as a tourist attraction and created botanical gardens and wildlife enclosures.
Biking around the lake is also possible on the 261 km (162 mi) long trail called “Bodensee-Radweg” (+ cycling-lake-constance.com). It brings its visitors to the most interesting sites and goes around the whole lake. Nevertheless, various shortcuts via ferries allow shorter routes and the trail is suitable for all levels.
The 260 kilometers long Lake Constance circular route, signposted as “Bodensee Rundwanderweg“, leads around Lake Constance through the territories of Germany, Austria and Switzerland. It is mainly intended for hiking; cyclists follow the sometimes slightly different managed Lake Constance cycle path.
Swimming in the lake is usually possible from mid-June to mid-September.