Achensee
Tirol
Achensee, also known as Lake Achen, is the largest lake in the Austrian state of Tyrol, located north of Jenbach. Nicknamed the 'Fjord of the Alps' and the 'Tyrolean Sea,' it lies between the Karwendel mountain range to the west and the Brandenberg Alps to the east. The lake reaches depths of up to 133 meters and boasts exceptional water quality, nearly potable, with visibility up to 10 meters below the surface. Its alpine climate keeps water temperatures low, rarely exceeding 20 °C. Achensee supports a variety of recreational activities year-round, including windsurfing, swimming, boating, hiking on over 500 kilometers of trails, mountain biking, climbing, and golf in summer, while in winter it becomes a hub for cross-country skiing with extensive groomed trails and family-friendly slopes. The lake's surroundings include several municipalities such as Eben am Achensee, Achenkirch, and Pertisau, which serve as popular tourist destinations. Historically, the lake was under the ownership of the St. Georgenberg-Fiecht Abbey since around 1120 and was acquired by the city of Innsbruck in 1919. The Achenseebahn narrow-gauge rack railway, opened in 1889, and a fleet of historic and modern steamboats have long facilitated tourism. The lake also serves as a reservoir for hydroelectric power managed since 1924 by Tiroler Wasserkraft AG, with a power plant in Jenbach utilizing the lake's outflow. The scenic combination of pristine waters, alpine peaks, and rich cultural heritage makes Achensee a unique and attractive destination in the Alps.
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Tip: The best time to visit Achensee depends on your interests: summer offers excellent conditions for water sports, hiking, and biking, while winter is ideal for cross-country skiing and family-friendly ski slopes. Consider purchasing tickets in advance for the Achenseebahn steam railway and boat cruises to avoid queues during peak season. Visitors can benefit from regional tourist cards offering discounts on activities and transportation. Access to hiking trails varies in difficulty; some require good fitness and surefootedness, especially along the western shore. Early morning or late afternoon visits offer calmer waters and beautiful light for photography.
Interesting facts
- •Achensee is the largest lake in Tyrol and is nicknamed the 'Tyrolean Sea' and 'Fjord of the Alps'.
- •The lake's water quality is near drinking water standards with visibility up to 10 meters.
- •The Achenseebahn, a narrow-gauge rack railway opened in 1889, connects Jenbach with the lake and is a historic attraction.
- •The lake's hydroelectric power plant, operational since 1927, produces up to 96 MW using eight pelton wheels.
- •The lake level is lowered by up to 6 meters in winter to manage water for power generation, changing the lake's size seasonally.
- •Achensee and its surroundings feature over 500 km of hiking trails and 220 km of cross-country skiing tracks.
- •The Chalet School series by Elinor Brent-Dyer is set in the Achensee region, highlighting its cultural significance.
History
Achensee has a long history of ownership and use dating back to around 1120 when it was owned by the rulers of Schlitters and then transferred to the St.
Georgenberg-Fiecht Abbey.
The lake gained prominence in the early 15th century through Emperor Maximilian's hunting and fishing manuscripts.
The city of Innsbruck acquired the lake in 1919, marking a shift toward modern tourism development.
The construction of the Achenseebahn rack railway in 1889 and the introduction of steamboats facilitated visitor access.
Since 1924, the lake has been managed for hydroelectric power production, with significant infrastructure built to harness its outflow.
Over the 20th century, the lake area expanded its recreational offerings, becoming a year-round destination for outdoor activities.
Place Guide
Achenseebahn Rack Railway1889
A historic 6.8 km narrow-gauge rack railway connecting Jenbach with Seespitz at Achensee, opened in 1889. It offers scenic transport along the lake's eastern shore and is a popular attraction for visitors.
Steamboat Fleet on Achensee1887–2016
The lake's fleet includes historic and modern vessels such as the 'St. Benedikt', 'Stella Maris', and the latest 'Achensee' steamboat launched in 2016, providing cruises that showcase the lake's beauty and connect lakeside towns.
Karwendel and Brandenberg Alps Surroundings
Achensee lies between the Karwendel mountain range to the west and the Brandenberg Alps to the east, offering dramatic alpine landscapes, hiking routes, and viewpoints such as the Prälatenbuche and Gaisalmsteig trail.
