Lake Obersee is a scenic mountain lake located in the Swiss Alps in the canton of Schwyz, Switzerland. It is known for its clear, turquoise waters and stunning views of the surrounding mountain ranges. The lake is located in a protected nature reserve and is surrounded by lush forests and rolling meadows.

Visitors to Lake Obersee can enjoy a variety of outdoor activities, including hiking, swimming, fishing, and boating. There are several hiking trails that wind through the surrounding mountains and offer stunning views of the lake and its surroundings. The lake is also a popular spot for fishing and swimming during the summer months.

There are several restaurants and cafes in the area, as well as a few small hotels and guesthouses for those who wish to stay overnight. Additionally, there are several scenic picnic areas around the lake where visitors can enjoy a meal and take in the beautiful views.