Ministerialenburg, Medieval castle in Burgpreppach, Germany.

Burg Bramberg is the ruin of a Würzburg administrative castle on the 494-metre summit of the Bramberg, an extinct volcanic cone in the Haßberge hills. The ring-house castle with its ring and neck ditches dates from the 12th century; the core castle in the southeast was rebuilt around 1330/40. A projecting gate tower with a slightly raised entrance leads into the two-storey residential building, whose pointed inner gate still shows the claw stones of a portcullis. At the south end survives the stump of a stair tower above a largely buried cellar.

The castle was built as a residence for ministeriales, a class of administrators who managed estates and performed military duties for higher-ranking nobles. It reflects an important period in medieval Bavarian social structure and how power was distributed.

The castle reflects how a special group of administrators called ministeriales lived and organized their power in the medieval region. The placement within the landscape shows how these officials demonstrated their status and authority to surrounding communities.

A car park with a hiking board lies below the ruin; the climb to the castle takes about 15 minutes through mixed forest, passing the two basalt quarries closed in 1955. The site is freely accessible at any time. Since December 2021 an 11-metre spiral staircase in the gate tower leads to a viewing platform.

Excavations have revealed remains from early medieval settlements underneath the site, showing how the area was inhabited before the castle was built. These findings offer clues about construction methods and daily life from that distant period.