Despite its grandiose name, this enigmatic first-century void under the town is no cave, and it's possibly not a palace either.

The extensive relics of an ancient Roman and Phoenician fish processing plant hide in a town park.

This abandoned, turn-of-the-century astronomy hub is now the subject of more photographs than it ever took.

This ornate Weser Renaissance house was also the home of an infamous witch hunter.

An impressive array of unique homemade planetariums.