Lake Gruyère (Lac de la Gruyère) is the longest and second-largest artificial lake in Switzerland, measuring 13.5 kilometres and covering almost ten square kilometres at high water. This is precisely why the lake on the edge of the Fribourg foothills is so popular for all kinds of watersports.

The elongated lake between Fribourg and Bulle stretches from Broc to Rossens, following the former course of the River Saane. Rossens is the location of the dam built in 1947. On the small island known as “Vers les Tours” in the middle of the lake stands a castle ruin with a chapel – often the setting for fairytale weddings. The small town of Pont-en-Ogoz stood here until the mid-15th century, surrounded by the Saane. When the river was dammed many ruins sank into the lake, leaving behind the idyllic surroundings on the island.

A private organisation offers boat trips in summer with information about the lake and the important historic settlement of Ogoz. Rowing boats, kayaks and canoes can all be seen on Lake Gruyère – in recent years they have been joined by many stand-up paddle boarders. Various companies offer canoe hire and/or guided tours.