Burg Unterthal, Castle ruins in Thal, Austria
Burg Unterthal is a castle ruin on a hilltop between Kirchberg and Thalersee, where visitors can still see foundations and wall remains scattered across the site. The most notable structures are a rectangular residential tower with a stone barrel vault cellar and a round tower that dates to a later period.
The castle was founded in the 13th century by the Lords of Thal and suffered heavy damage during a nobles' uprising against Duke Albert I in 1292. The remains reflect these early conflicts that shaped the region's history.
The rectangular tower house, dating from the early 14th century, represents medieval defensive architecture with its stone barrel vault cellar.
The site is best reached on foot from nearby villages, as the hillside is accessible via local paths. There is minimal infrastructure on-site, so visitors should bring suitable footwear and allow time to explore the scattered remains.
The castle once contained a chapel that functioned as a parish church for the surrounding community until 1772. This religious role gave the castle continued importance in local life long after it ceased to serve as a residence.
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