Switzerland. Canton Bern. Wengen. FIS Ski World Cup Lauberhorn. A drunk man, dressed as a diver with palms, mask and snorkel during a bachelor party, is lying in the snow. A bachelor party, also known as a stag party, stag night, stag do, stag weekend, or a buck's night is a party held for a man shortly before he enters marriage, to celebrate his "last night of freedom". Wengen is a mountain village in the Bernese Oberland of central Switzerland. Located in the canton of Bern at an elevation of 1,274 m (4,180 ft) above sea level, it is part of the Jungfrauregion. 14.01.17 © 2017 Didier Ruef