This dive site, Brougier Park Unterwilen, is located on Lake Lucerne (Vierwaldstättersee) in Switzerland, easily accessible from the Seestrasse between Küssnacht am Rigi and Vitznau. Divers can find a parking lot shortly after the "Unterwilen" bus stop on the left side. While popular with non-divers in summer, its convenient shore access makes it suitable for divers of all levels, offering a straightforward lake dive experience without complex navigation. There is no specific historical information or unique story provided for the dive site itself, focusing instead on its natural features.
The underwater ecosystem here thrives with freshwater species. Divers can observe perch, burbot, and pike practically all year round, adding consistent interest to the dives. A unique highlight occurs specifically in spring with the fascinating "big toad wedding," which provides an exceptional opportunity for macro observation.
The best time to visit for the full experience, especially to witness the "toad wedding," is during spring. While the site is popular in summer, divers should note that WC facilities have limited opening hours during this peak season. Divers should also be prepared for typical Swiss lake temperatures, which necessitate appropriate thermal protection, and be aware of potential surface boat traffic due to the site's popularity with non-divers. This site is also highly suitable for both snorkeling and freediving.

