Burg Langenegg, Medieval castle ruins in Martinszell, Germany.
Burg Langenegg is a castle ruin on a forested hilltop within a bend of the Iller River near Waltenhofen. The remaining stone tower with rectangular base shows the solid construction style of the medieval period.
The castle was built around 1250 and served as a seat for several noble families before passing to the Prince-Abbot of Kempten in 1647. This change marked a shift in how the site was used and governed.
The structure became a poorhouse in 1734, notable for housing Anna Schwegelin, who faced prosecution in Germany's last witch trial.
The site can be reached via a small road from Thanners, and sturdy footwear is recommended for the narrow walking path. The hilltop setting provides room to explore and the surrounding forest offers shade.
Following restoration work between 2001 and 2004, visitors can see the tower walls built from local nagelfluh stone fragments, some sections over a meter thick. This choice of material reflects how medieval builders worked with what they found nearby.
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