There are 5,000+ castles in Germany, and many of them come onto the real estate market every year.

Priced from $650,000 to $26+ million, which seems kind of cheap, but the upkeep is high, and you might not be able to drive all the way up to it.

[One] family must park and take a five-minute uphill walk to the front door, which is accessed by a drawbridge. As a result, the family uses a small tractor or a conveyor belt from the valley floor to get everything from groceries to building materials up to the castle....