You might know it as the Overlook Hotel, but the inside is not going to be familiar.

A subterranean world of tunnels links several buildings of this rare 19th-century asylum.

Though its branches are painted bright colors by generations of locals, the tree is said to be a haunted portal to hell.

A unique botanical garden housed in three giant geodesic domes.

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

Literally a million fascinating cartographic artifacts are held in this sprawling university collection.

What appears to be a wizard's lair in Milwaukee actually houses a massive water pipe.