Nine limestone rock stacks on Australia's "Shipwreck Coast."

An unphotographable nightly march of tens of thousands of "fairy penguins" from sea to shore.

Is there such thing as too many fruit bats? Not anymore.

A church of bones, decorated with 40,000 human skeletons.

Underneath this small church are 15,000 bones, arranged by an obsessive academic.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

Steadily reminding Czechia of its past.

Macabre astrological automaton clock dating to the late 1400s.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Looming communist pillar with a Czech twist.

This former quarry is now a picturesque gorge that hides a sunken lake.

The ghostly remains of an accidental sea.

Version of the French Riviera destroyed by the sea.

This historic tower in the California desert promises visitors a "vortex of good vibes".

Megachurch turned Catholic church comprised of 10,000 glass panes.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

A Roman-style column in Oregon hides a spiral staircase inside.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

Two thousand artifacts from around the world collected by one woman who loved to travel.

This impressive Boston holy house is the American mecca for Christian scientists.

This upscale streetwear store is hidden behind a fake Snapple machine in the back of a deli.

The site of one of the strangest disasters in history—a wave of deadly molasses traveling at 35 mph.