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Overlooking the entire Primiero Valley from above and impossible to miss for anyone gazing toward the Val Canali, Castel Pietra stands as a monument to the history of the region — an endless source of legends and tales passed down through generations.

Castel Pietra rises above the village of Tonadico, built atop a massive glacial boulder (from which it takes its name) overlooking the Canali Stream — a strategic position from which to control the road connecting Primiero with Agordo. Its origins are not entirely clear: the castle was presumably built by the Bishops of Feltre as the residence of their representative, the captain, responsible for administering justice. The first written record of Castel Pietra dates back to 1064.
Castel Pietra in Primiero  visto da lontano

During the 14th century, Primiero found itself caught in the conflicts among the Scaligeri, Venetians, Carraresi and German dynasties vying for control of the Bishopric of Feltre. In 1337, Charles of Luxembourg reached Primiero during his expedition toward Feltre, conquering Castel Pietra from the Scaligeri. On October 7, 1349, Charles of Luxembourg was crowned King of Tyrol (Charles IV); with this coronation, Primiero was separated from Feltre for the first time, becoming a direct Tyrolean fief.

In 1404, Castel Pietra was granted to the Welsperg family, originally from the Puster Valley, who managed it until the 19th century.

On the night of St. Stephen’s Day in 1675, a devastating fire broke out in the castle. The flames completely destroyed it, leaving only ruins. Attempts at partial reconstruction were made in the following decades but were permanently halted in 1720, when a violent whirlwind tore off the entire roof. This event marked the definitive abandonment of Castel Pietra. As if that were not enough, in 1885 the entire northern wing collapsed, destroying the last accessible entrance to the structure.

In the early 1980s, work began to clear the ruins of vegetation and debris, allowing for the recovery of the surviving walls. Further restoration work has been completed over the years. Still owned by the Thun-Hohenstein-Welsperg family, Castel Pietra today remains in a state of picturesque ruin.

Resti all'interno di Castel Pietra in Primiero
Mura dI Castel Pietra a Tonadico
Ruderi del Castel Pietra in Primiero
Castel Pietra in Primiero - Trentino

How to access the ruins of Castel Pietra

In recent years, the municipality of Primiero San Martino di Castrozza has carried out an extensive redevelopment project in the area, including a new metal staircase and modern safety railings that allow access to the site.
To access the ruins, visitors must be accompanied by a Mountain Guide or a Medium Mountain Guide (AMM), who must first request authorization from the ApT office in Fiera di Primiero, providing full details of the group (up to 10 people at a time). It is therefore advisable to plan the visit well in advance to complete the required paperwork and arrange for the delivery of the keys to the guide/AMM.

The cost and meeting point are defined direc

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