Ruins of Pont-en-Ogoz
The ruins of Pont-en-Ogoz on the Île d'Ogoz in the canton of Fribourg, Switzerland, are the most visible remains of the medieval site of Pont-en-Ogoz, built on a rounded peninsula formed by a meander of the Sarine river. The twin towers and adjoining buildings formed two distinct castles, seats of co-lordships, each with a habitable keep and residential buildings. The site, which also includes a medieval chapel, was abandoned in the early 15th century, and the meander lobe became an island after the construction of the Rossens dam in 1948.