Hochburg

This hypothesis is also supported by an engraved plaque added to the castle by Karl II and a document dating back to 1161 mentions it as Castro Hahberc.

The further development of later property documents suggests that Erkenbold von Hachberg, the last of his name, gave his holdings to the Zähringer to finance his participation in the crusades (1147–1149).

A document on the talks about the founding of the monastery Tennenbach from 1161 implies that Hermann IV von Baden was the reigning lord of castle Hachberg at the time.

In 1681 the defences were destroyed voluntarily by the French after they had taken many of the holdings in Baden through the Treaty of peace of Nijmegen and a manned castle Hachberg could have posed a sizable threat to their new territory.

The castle has been depicted in several paintings and has many mythical tales surrounding it, speaking of hidden treasure and restless knights, waiting to return.