You can walk up Thailand’s naturally non-slip waterfall.

Vintage furniture and art share space with all manner of collectibles at this quirky shop in Bangkok.

This claimant to the title of "smallest church in the 48 states" doubles as an equally tiny, quasi-post office.

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.

Come for the speed, leave in love with the desert.

A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

A replica that won't float away.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

Jurassic Park—A Still Life.

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

The remains of this early 20th century refinery loom on a mountainside like a graffiti-covered fortress.

A museum dedicated to the alleged Roswell Incident.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

A unique geological area spiked with wind-carved rocks that resemble teepees.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

This wrecked airplane has been sitting on a black sand beach since the 1970s.

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

A sulfuric martian landscape that looks far better than it smells.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Iceland's "Smoky Valley" is a beautiful river that is shrouded in a constant cover of steam clouds.