Bubenstein Castle (Ruine Bubenstein), also called Neu-Falkenstein, is a ruined spur castle on the northern side of the Höllental valley, about 500 metres west of Old Falkenstein Castle above the village of Falkensteig in the municipality of Buchenbach in the southwest German state of Baden-Württemberg.
The castle was built by Walter of Falkenstein in the 13th century and in 1266 its residents were recorded as the lords of Falkenstein. In 1328 the lords of Staufen were named as its occupants. In the 19th century, part of the castle rock was blown up for the railway line and in 1960 the castle was dismantled due to its poor state of repair.
The bergfried of the castle measured 10 by 10 metres, and the neck ditch was 5 metres deep and 8 metres wide. Of the old castle only wall remains and the neck ditch survive.
References:The Gravensteen is a castle in Ghent originating from the Middle Ages. The name means 'castle of the counts' in Dutch. Arnulf I (918–965), Count of Flanders, was the first to fortify this place, building a medieval bastion on this high sand dune, naturally protected by the river Leie and its marshy banks. This bastion consisted of a central wooden building and several surrounding buildings, also in wood.
In the early 11th century, the wooden building was replaced by a stone residence, consisting of three large halls that made up three storeys, connected by a stone stairwell. The monumental stone staircase, the light openings, the fireplaces built into the walls and the latrines were signs of considerable luxury and comfort in those days. There was probably also a tower.