To be privately owned
CastleAltlengbach-Unterthurm
Unterthurm (Vestenthurn) Castle

The present-day ruin of Unterthurm is the remnant of the old Veste Turn, which possibly dates back to a defensive structure of the Magyar March. However, the sparse documentary evidence about the castle only begins in the late High Middle Ages. The residence was home to a minor noble family.
Source: wehrbauten.at · Image: http://www.wehrbauten.at/noe/niederoesterreich.html
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: 48.1723, 15.8898