The mysterious wonder of an underground waterfall is illuminated by multicolored lights.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

One part local history, 99 parts gruesome haunted house.

World-famous, Pink's still manages to keep its prized cult fetish status.

Macabre astrological automaton clock dating to the late 1400s.

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

A beautiful geyser under environmental threat.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Tucked in the back of this amazing antique store is an important piece of medical history.

A semi-scholarly approach to sex.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

World's first "penitentiary," meant to be humane, drove men insane.

World's largest collection of serial killer artwork and other macabre exhibits.

A terrific purveyor of natural history objects and curios.

This tiny alleyway is now a shrine to a subculture riot between the mods and rockers.

Go inside to really appreciate this 500-year-old technological masterpiece.

Imagine playing a version of Legends of the Hidden Temple, but with a distinctly Southern Gothic flare.

This concert pavilion on the shore of the Great Salt Lake has been destroyed by fire, water, and disinterest but keeps coming back.

A collection of haunted objects and macabre oddities under one roof.

There's nothing creepier than a cemetery next to a clown motel.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

This beloved roadside attraction welcomes visitors with his signature neon smile.

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