Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

A museum wholly devoted to juvenescence.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

This South London cemetery holds the remains of more than 15,000 people.

The largest of London's subterranean rivers and once a mad, bad center of London life.

The taxidermied remains of a once-great parrot.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Hidden beneath the streets of London is a secret subway that only carried mail.

London's smallest police station is barely the size of a phone booth.

The farthest you can be in the contiguous U.S. from a McDonald's location.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest island on the great salt lake is home to curious creatures and strange stories.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

This UFO landing strip was created by a charitable Wyoming city that was worried about residents of Jupiter.

A house carved into a rock in the 1940s.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

One of few remaining antique carousels with stationary animals in the U.S.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

The largest self-built castle in the U.S., six decades in the making.

The superstar of Cold War nuclear bunkers has been featured in countless films but is now barely operational.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.