Langnau am Albis is a municipality in the district of Horgen in the canton of Zürich in Switzerland. It is located in the Sihltal valley on the slopes of the Albis mountain range. The local train station is Langnau-Gattikon. A major attraction of the town is the Wildpark Langenberg, a zoo in a largely undeveloped location on a wooded hill within the town of Langnau where animals such as the wolf, lynx and ibex can be watched roaming freely. Spectacular views of the Cantons Zurich and Zug and the Swiss Alps can be gained from the Hochwachtturm, a 33m tall wooden tower, accessible to the public, located on top of the Albis range about 1.5 km from the Albis pass. Nearby lie the ruins of the Schnabelburg, a castle errected in 1170 to guard the road from Zurich to Lucerne (destroyed in 1309).