Castles around Rothenthurm offer a glimpse into medieval Swiss history. The region is characterized by its picturesque upland valley and the largest upland moor in Switzerland. Rothenthurm itself is known for the Letziturm, a 14th-century fortified tower that gave the village its name and played a crucial role in defending trade routes. This area provides a blend of historical structures within a natural landscape.
Last updated: June 26, 2026
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Schwanau Island – a small island with castle ruins and a restaurant. An island boat taxi will take you to and from the island. Please note the departure times.
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Small restaurant on the island with ferry, please inform yourself in advance about opening hours or ferry times
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The Alt-Wädenswil was once a large castle spread over two hills in the municipality of Richterswil. The castle was built before 1200, and today it is a dilapidated ruin.
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Childhood memories walked through there so many times
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The castle was first mentioned in writing in 1265. The Freiherrenturm, built before 1200, is the oldest part of the castle. Its outer shells are made of mighty boulders. 1287 sold the last baron Rudolf III. for lack of descendants, the lordship of Wädenswil to the Johanniterhaus Bubikon. Wädenswil became a commander of the Johanniter. After the Reformation, the Johanniter sold the lordship of Wädenswil with all rights to the city of Zurich in 1549. In 1900 an initiative committee acquired the castle grounds and in 1902 established the Foundation for the Preservation of Alt-Wädenswil Castle.
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A really impressive ruin, with several barbecue areas around and on the main castle. The ruin is nowhere secured by railings, CLIMB AT YOUR OWN RISK!
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One of the most impressive ruins in the area.
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Current use of the palace complex castle tower Today the castle tower is very often available for weddings, family celebrations or business events. governorship The former governor's office in Pfäffikon is now one of the two community centers in the community of Freienbach. Text/Source: Wikipedia https://de.wikipedia.org/wiki/Schlossanlage_Pf%C3%A4ffikon
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Visitors particularly enjoy Schwanau Island, a historical site with a renovated ruin and a restaurant. Other popular spots include Altwädenswil Castle Ruins, known for its impressive structure and barbecue areas, and Schwandegg Castle, a historical site that once housed a sanatorium.
The Letziturm, also known as the Red Tower, is a 14th-century fortified tower that gave Rothenthurm its name. Built around 1323, it was part of a defensive barrier controlling a vital trade route and defending against conflicts between Schwyz and Einsiedeln Abbey. It's a key symbol of the village and its medieval history.
Yes, Altwädenswil Castle Ruins is a great option for families. It features several barbecue areas and is considered an adventure playground for children, with nearby forest areas for relaxation and play. Pfäffikon Castle and its chapel are also family-friendly historical sites.
You can reach Schwanau Island by ferry or boat taxi. If you have a SUP board, you can also paddle to and around the island from Lauerz.
The region around Rothenthurm offers various outdoor activities. You can find numerous running trails, such as the 'Bibersteg – Altmatt train station loop' or 'View of the Hochmoor in Zug loop'. For gravel biking, explore routes like 'Einsiedeln Monastery – View of Sihlsee loop'. Mountain hiking opportunities include challenging trails like 'Summit view from Grosser Mythen'. You can find more details on these activities in the respective guides: Running Trails around Rothenthurm, Gravel biking around Rothenthurm, and Mountain Hikes around Rothenthurm.
Pfäffikon Castle, originally built by the Einsiedeln monastery in the 13th century, served as a defensive structure, storage facility, and abbot's residence. It played a significant role in regional history, even serving as a refuge for monks during a major fire. Today, the castle tower is often used for weddings, family celebrations, and business events.
Yes, the Pfäffikon Castle Chapel (Chapel of St. Eustace) is a notable religious historical site. It is part of the Pfäffikon Castle complex and has a rich history dating back to the 15th century, with its current interior largely from the late 19th century. It is often used for concerts and marriages.
Visitors appreciate the tangible connection to medieval Swiss history, the picturesque natural surroundings, and the blend of historical structures with opportunities for outdoor activities. The renovated ruin on Schwanau Island offers great views, while Altwädenswil Castle Ruins is loved for its impressive structure and family-friendly amenities like barbecue areas.
Yes, for more detailed historical information about the Letziturm (Wehrturm Rothenthurm), you can consult its Wikipedia page: Wehrturm Rothenthurm on Wikipedia.
The region is beautiful year-round. While specific opening hours for individual sites may vary, the natural landscape and outdoor activities are generally best enjoyed during spring, summer, and autumn. Winter offers a different charm, especially with the picturesque upland moor, but some outdoor routes might be less accessible.
Rothenthurm is situated in a picturesque upland valley amidst the largest upland moor in Switzerland. This unique natural setting provides a scenic backdrop to the historical structures and offers opportunities for nature walks and enjoying the distinctive landscape.
The area features a variety of historical structures, including fortified towers like the Letziturm, castle ruins such as Altwädenswil Castle Ruins, and historical castle sites like Schwandegg Castle. These offer a diverse look into the region's past.


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