An important Mayan religious and trading center dating back to 200 BC.

This gracefully curving formation looks like a massive wave that was suddenly turned to stone.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

Crawling into this primordial cave may feel disconcertingly familiar.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

An enchanting rocky island of scraggly baobabs surrounded by an ancient sea and sprawling salt pans.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

The world's only museum devoted to the wonders of fluorescence.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

One man's swirling six-acre monument of stone.

An abandoned 19th century quarry in the middle of the woods, remade by unnamed wanderers into a massive series of rock thrones.

This was once the center of the Birdman cult, and is now a World Heritage Site.

The largest stone moai on Rapa Nui.

This large round boulder is said to emit spiritual power, but it may just be magnets.

The absurd creation is a compulsory destination for selfies in Buffalo.

This two-room factory has been cranking out the musical signifier of zaniness for a century.

Ruins of a once-prized railroad station in New York.

A natural gas leak provides a flickering flame beneath a waterfall.

The highest peak in the state of Vermont has some interesting features.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

The "original web site," this farm in Northern Vermont encourages orb-weaver spiders to build their daily webs, and then sells the preserved masterpieces.