Château de Montréal-de-Sos, Medieval fortress ruins in Auzat, France.
Château de Montréal-de-Sos is a medieval fortress built on a rocky hilltop in the Ariège region of southern France. The ruins display a central keep with defensive towers and residential structures spread across the site.
The fortress was built in the late 12th century as a key stronghold for the Counts of Foix controlling the valley. It was deliberately destroyed in the 15th century as its military importance declined.
The name refers to a saint known for healing and connects the fortress to local religious traditions of the valley. This connection shaped how people understood this strategic place beyond its military role.
The site is accessible by hiking trail and can be visited during warmer months with guided tours led by archaeologists and local experts. Sturdy footwear is recommended as the ground is uneven and paths climb steeply in places.
Archaeological digs from 2001 to 2017 uncovered remains buried deep under layers of debris, revealing how the fortress was originally built. These findings showed how much history was hidden beneath the surface and how careful excavation can recover lost details of medieval strongholds.
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