The only remnant of a small mining town is an abandoned railroad tunnel that is steeped in ghostly lore.

An abandoned asylum incorporated into a college campus.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

The grave of the iconic Kentucky Fried Chicken mascot features a bust of the man behind the goatee.

This former tuberculosis research hospital endeavored to cure the dreaded disease with fresh air and positive attitudes.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

An unusual stroll through gentlemen's erotica demonstrates that pornography is timeless.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

While not recognized by Guinness, this chocolate waterfall is likely to be the world's largest.

A hotel and restaurant serving as the mecca of kitsch.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

Visitors to this library are in for a real-world education in modernist architecture.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

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

Quite simply the largest tree in the world (by volume).

Deep scars on the earth left by the Ice Age.

Medical history museum featuring a lovely doctor's office from the 1800s.

World's largest Christmas store.

Three courses accompanied by Christian rock.

A pharmacy built in the shape of a mortar and pestle, now resembles a fancy cocktail.