Best castles around Ascona - Locarno offer a journey through the region's rich history, situated on the shores of Lake Maggiore. This area once played a crucial role in medieval defenses, with several historic strongholds. While some structures exist as ruins, others have been integrated into modern buildings or restored. These sites provide insight into Ascona's past and cultural evolution.
Last updated: May 16, 2026
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The historic fortress was built in 1558 by Peter von Pro of Uri as a barracks for his mercenaries and as a warehouse. The building was added to the inventory of cultural assets of the Canton of Ticino in 1997.
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The castle houses two museums and is very close to the city centre. From there it is just a few minutes' walk to Piazza Grande
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Medieval structure in good condition and well integrated into the urban context
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Built in 1560 according to the wishes of the Uri mercenary leader Peter A Pro, as a military base for the recruitment of mercenaries. The complex includes one massive square-plan building with a projecting top part, with walkway and machicolations. Adjacent is a rectangular two-floor building, with iron gratings on the ground floor windows. Inside are corridors and hiding places. It’s also known as “La Vignaccia”. Close to Minusio are also the ruins of the “Fraccia”, a wall with towers built during the Fourteenth Century. Unfortunately, it's not open to the public.
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The castello was built in the first half of the 13th century and was the residence of the Milanese Noble family de'Ghiriglioni. The small fortress originally encompassed an area of 41 x 54 metres enclosed by a wall with 4 guard towers at each corner. The south-eastern wall bordered directly on the lake and had its own jetty. Moats around the three remaining walls offered further protection from potential aggressors. After 400 years the de'Ghiriglioni family returned to Milan in the 17th century. While the Western area of the castle was almost completely destroyed over the centuries, the Eastern part remains and ist today the Hotel Castello Seeschloss. You can stay in the south-eastern tower.
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The historic San Materno Castle revives, after careful restoration, as a modern space for exhibitions of the municipality of Ascona in all its splendor. Thanks to a happy agreement between the community and the Kulturstiftung Kurt and Barbara Alten, the castle houses a permanent collection of more than forty works by German artists, the most important from the end of the nineteenth century until after the First World War.
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Of ancient origin, it was conquered in 1342 by the Milanese Visconti family and subsequently expanded. In 1532, after the victory of the Confederates over the Milanese, it was largely demolished and of the five towers only one remained. The castle currently houses the Archaeological Museum, which houses a considerable collection of Roman glasses from archaeological excavations in the region, including the famous "Bird's Chalice".
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Built as a recruiting ground for Swiss mercenaries in the 16th century, this fort is now privately owned and one of the most interesting monuments in the area.
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Ascona has a rich history with several notable castles. While some are now ruins or integrated into modern buildings, you can still explore sites like the remnants of Castello di S. Michele, the revitalized San Materno Castle Museum, and parts of the Castello dei Ghiriglioni, which is now incorporated into the Albergo Castello. These offer a glimpse into Ascona's medieval defensive past.
Yes, the Castello di S. Materno has been carefully restored and transformed into the San Materno Castle Museum, which now houses an art collection. Additionally, parts of the historic Castello dei Ghiriglioni are incorporated into the Hotel Castello Seeschloss, where you can even stay in one of its original towers.
The original Castello di S. Michele is largely in ruins, with virtually nothing visible above ground today. However, primary architectural structures can still be observed in the underground parts of the San Michele Church. Its historical significance as a former defensive stronghold overlooking the Verbano makes it an important historical site to consider when exploring Ascona's past. You can learn more about its history here.
The Visconti Castle, of ancient origin, was conquered by the Milanese Visconti family in 1342 and later expanded. Today, it houses the Archaeological Museum, featuring a significant collection of Roman glasses from local excavations, including the famous "Bird's Chalice." It's also well-integrated into the urban context and close to the city center.
The Iron House is a historical site built in the 16th century as a recruiting ground for Swiss mercenaries. Commissioned by Uri mercenary leader Peter A Pro, it served as a military base. It features a massive square-plan building with a projecting top part, walkway, and machicolations. While privately owned and not open to the public, it remains one of the most interesting historical monuments in the area.
The Fortezza di Pro, built in 1558 as barracks for mercenaries and a warehouse, is an important cultural asset of the Canton of Ticino. While its historical significance is high, the provided information does not specify if it is regularly open to the public for visits. It's best to check local listings for current access information.
Yes, the region offers various hiking opportunities. You can find routes like the 'Grand Tour of Lake Maggiore: Ascona - Ronco Loop' or 'Between Parco dei Poeti and Ascona's lakeside promenade − circular route.' For more hiking options, explore the Hiking around Ascona - Locarno guide.
There are several cycling routes in the vicinity. Options include the 'Locarno, Ascona, and Tenero Loop' for an easy ride, or more challenging routes like 'From Ascona to Mergugno.' For a comprehensive list of cycling tours, refer to the Cycling around Ascona - Locarno guide.
The Visconti Castle is considered family-friendly, offering an archaeological museum that can be engaging for various ages. Additionally, the Hotel Castello Seeschloss, which incorporates parts of the historic Castello dei Ghiriglioni, offers a unique experience that families might enjoy, including the chance to stay in a castle tower.
The castles and surrounding areas are enjoyable throughout much of the year. Spring and autumn offer pleasant temperatures for exploring both the historical sites and nearby hiking trails. While some attractions might have reduced hours in winter, the mild climate of Lake Maggiore can still make for a charming visit.
Yes, the Hotel Castello Seeschloss, built into the historic Castello dei Ghiriglioni, offers accommodation and dining options. You can even stay in one of its original towers, providing a unique historical experience.
The San Materno Castle Museum houses a permanent collection of more than forty works by German artists. This collection primarily focuses on German art from the late 19th century until after the First World War, offering a cultural experience within a historical setting.
For those interested in military architecture, the Iron House and Fortezza di Pro are excellent examples. The Iron House was a 16th-century recruiting ground for mercenaries, featuring a massive square-plan building with defensive elements. Fortezza di Pro, built in 1558, also served as barracks and a warehouse, showcasing historical military design.


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