Burg Bonames, Archaeological site and castle in Frankfurt-Nord-Ost, Germany.

Burg Bonames is a medieval castle site located within a residential complex in northern Frankfurt. The thick walls, measuring between 1.30 and 1.60 meters, and two round towers once formed the core of its defensive design.

The oldest finds from the site date to the 13th century, and a knight named Henricus von Bonames appears in a document of 1219. In 1345 Johann von Bonames granted Frankfurt an opening right, after which city soldiers were stationed there; the city used a pre-emption right in 1367. Repairs and tower watches are recorded for 1476, 1480 and 1483, before the castle was burned down in the Schmalkaldic War of 1546.

The name Bonames appears in 1219, when Henricus von Bonames called himself miles, a knight, which points to a castle already standing here. The site is now marked by red paving stones in a residential courtyard, and display cases explain the excavations. The finds were mostly glazed and unglazed earthenware of the 14th and 15th centuries, thrown away into the moat.

The ruins are marked with colored pavement in the courtyard of a residential complex, making the original wall layouts easy to follow. Visitors can explore the remains freely in an open, accessible setting that is integrated into the neighborhood.

The outer moat was twice as wide and deep as the inner one and ran 25 metres from the wall. The inner moat, five metres wide and up to two metres deep, reached the wall itself. The two moats were found during excavations in 1987 and 1993.