Lake Brienz is a lake just north of the Alps, in the canton of Bern in Switzerland. It has a length of about 14 kilometres, a width of 2.8 kilometres and a maximum depth of 260 metres. Its area is 29.8 square kilometres; the surface is 564 metres above the sea-level.

Lake Brienz is absolutely worth a visit in 2026, often cited by locals as the most beautiful lake in Switzerland due to its unique turquoise-emerald color. This stunning hue is caused by tiny glacial particles (glacial flour) that stay suspended in the water. Unlike its neighbor, Lake Thun, Lake Brienz is quieter, steeper, and more dramatic. A highlight is taking a ride on the Lötschberg, a historic paddle steamer, which stops at the fairytale village of Iseltwald—famous as a filming location for the hit show Crash Landing on You. Nature lovers should not miss the Giessbach Falls, which tumble down right next to a historic grand hotel accessible by the oldest funicular in Europe. For the best views, take the Brienz Rothorn Bahn, a vintage steam rack railway that climbs to the summit for a panoramic look at the lake’s vibrant waters against the Bernese Alps. If you prefer a tranquil, authentic Swiss atmosphere over the bustling tourist crowds of Interlaken, Lake Brienz is an essential stop on any Swiss itinerary.