The remains of the Castle can be visited
Dongio Castle (Ruin)

The Castello Dongio ruin, a castle complex in the Swiss canton of Ticino, is nestled into a natural grotto. As part of a group of defensive structures in the Blenio Valley, it offers an insight into High Medieval architecture and way of life.
History+
Research has identified the so-called “Case dei Pagani” in the Blenio Valley, which includes Castello Dongio, as small castle complexes built in the High Middle Ages, presumably between the 11th and 13th centuries, by local noble families. In times of war, these difficult-to-access places also served as refuges for the rural population. Castello Dongio was abandoned in the 15th century. Despite the lack of written records, conclusions about its former importance can be drawn from the preserved building structures.
Location+
The Castello Dongio ruin is located in Dongio in the Blenio district in the canton of Ticino, Switzerland, at an altitude of approximately 587 meters above sea level.
On site+
The remains of the complex are integrated into a natural grotto. The residential wing, an elongated, two-part building, is still preserved up to a height of three stories and shows window openings and a latrine niche. Access to the building is via an elevated door, which is reached by a staircase made of stone slabs.
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Source: swisscastles.ch
Text and/or image for this object come from the linked site and are used with the permission of its operators; the linked page remains the copyright of its authors. The legacy catalogue kept text source and image source in a single field, so which part came from there can no longer be told apart entry by entry.
Location: 46.4381, 8.9604