Rushing water plunges over a 100-foot drop created by an ancient lava flow at this majestic waterfall.

A beautiful 62-acre Catholic shrine and botanical garden.

A tunnel with windows, so you don't miss out on the impressive views.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

This demon atop the Notre-Dame de Paris looks utterly bored.

The celebrated eyesore created by starry-eyed sweethearts.

This bridge was constructed from the rubble of the infamous Bastille.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

A piece of the iconic wall found an unlikely new home in a Vegas bathroom.

An island graveyard with spectacular views of the Caribbean.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

While it is not equipped to peer into outer space this observatory looks like it was built on the moon.

This lake in the Cascades lives up to its name, disappearing down a hole every spring.

The trunks of 3,000 year-old trees lurk beneath the surface of this crystal clear lake in Oregon.

This natural marble cave is one of only five national monuments in Oregon.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Beach instrument turned bed and breakfast.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.