Once strictly off-limits, this lower level housing curious and priceless vehicles of the Petersen Automotive Museum is now open to the public.

The private clubhouse for the members of the Academy of Magical Arts.

This weird abode has inspired everything from the "House On Haunted Hil" to a robot hunter's pad.

The final resting place of a space program monolith.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

Historic funicular railway, believed to be the shortest railroad in the world.

The legendary building that needed ghostly approval before being built.

A geological mystery on Camelback Mountain.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This immigrant bridge once spanned the Thames but is now a fixture of an Arizona city.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Hundreds of trees made from glass bottles make up this forest on Route 66.