Burg Warnsberg, Medieval castle in Lich, Germany.

Burg Warnsberg is a medieval fortress located on elevated ground near Lich in central Hesse. The remains display typical features of fortified structures from that era, with sections of wall and foundations that still mark its original footprint.

Built in the mid-12th century by Eberhard Waro von Hagen-Arnsberg, the castle protected a weather crossing and, with the castles Rodenscheid and Westwich, the settlement of Lich. From 1160 it was occupied by burgmanns. During the Falkenstein feud it was besieged and conquered; in 1377 it was pledged to Gerlach von Trohe. After 1420, as Burg Lich expanded, it lost importance and fell into ruin.

The castle's name appears in two forms, Warnsberg and Wernsberg, and it is shown on Wilhelm Dilich's copper engraving of 1591 and in Matthäus Merian's Topographia Hassiae of 1655. It guarded a Wetter crossing together with the castles Rodenscheid and Westwich, protecting the settlement that became the town of Lich.

The ruins sit on open ground and are reachable on foot, though the terrain is uneven and rocky in places. Visitors should wear sturdy shoes and expect minimal signage or facilities at the site.

The fortress was deliberately positioned on elevated ground to maximize views across surrounding fields and roads. This placement strategy was typical of medieval fortifications and reveals how carefully builders chose defensive positions.