A whimsical monument marks the highest point in Kansas, not that you could tell by the looks of it.

The hike to this stunning waterfall on a black sand beach is not for the faint of heart.

This mountaintop lake bubbles and steams in a perpetual boil, thanks to its direct link to the Earth's interior.

The world's most active stratovolcano is almost always erupting.

Meat and seafood are part of the frozen dessert flavors available at these legendary street stands.

A sapling of the legendary tree where conquistador Hernán Cortés sat and wept after an Aztec uprising.

Mexico's astounding mummy museum with "the world's smallest mummy."

Take in a sweeping views of Guanajuato—and save yourself a hike up a steep hill—on this funicular.

A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

The atmospheric road was never meant to be so creepy.

Northern Ireland's Brobdingnagian stepping stones.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

A hugely vast Irish landscape of barren rock that stretches for miles.

This single room has survived the centuries with almost no deterioration.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

A gated cross stands on the site where an Irish revolutionary met his end.

An important landmark in the history of algebraic logic.

This Irish museum in a historic 19th century market pays tribute to the glory of butter.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Packed with gear and memorabilia, this museum chronicles the history of skiing and how its rise shaped New England.

A serene plaza that commemorates one of the Granite State's most iconic figures.