Burgruine Eberburg, castle ruin in Germany

Burgruine Eberburg, also called Burg Ebermannsdorf, is a hilltop castle ruin on a wooded rise at 425 m above sea level above Ebermannsdorf. Its main surviving structure is a 16-metre-high octagonal keep of limestone ashlars, probably of five storeys, with a high entrance 4 m above ground; the first floor had a fireplace and a latrine. The original 23 by 24 m enclosure, surrounded by a ring wall, is otherwise reduced to scant wall remains, and herringbone masonry points to an earlier building on the site.

The castle was the ancestral seat of the Ebermannsdorf noble family, first mentioned in 1079. A Razo von Ebermannsdorf appears in 1123 and a Wirnt von Ebermannsdorf in 1129 in documents of Ensdorf Abbey, the same year a chapel dedicated to St. John the Baptist is first recorded. The family likely died out with Albert von Ebermannsdorf in 1309; later, Dietrich Tanlacher (1364) and Jacob Kemnater (1464, 1476) are named. In the 18th century the inhabitants probably moved to Ebermannsdorf Castle, which was extensively renovated in the 20th century.

The castle ruin stands above Ebermannsdorf and served as an important seat for local noble families over the centuries. The site reflects how medieval castles functioned as both defensive structures and residential centers, evidenced by the chapel dedicated to John the Baptist that once stood within its walls.

The tower stands in woodland on a hill about 425 metres above sea level above Ebermannsdorf. The high entrance at roughly 4 metres was reached by a wooden structure, and the tower interior is not open. The site is recorded as a Bavarian archaeological monument, D-3-6637-0120.

The tower is the oldest surviving polygonal bergfried in Bavaria, built from limestone ashlars with a high entrance 4 metres up. Its first floor held a fireplace and a latrine, and the space between the walls was filled with rubble and mortar. Herringbone masonry traces point to an earlier building on the site.