The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

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

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This elegant arc of a waterfall marks a religious turning point.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

A retiree's challenge to build an outdoor wonderland out of trash.

A bright little alley in La Boca is a part of tango history.

Xul Solar was an artist of alternate worlds, inventor of languages, and dreamer of utopias.

A pocket of jungle amidst urban expansion in Panama.

A huge, bustling local market in Panama City.

Shop the world's largest number of ice cream flavors, ranging from delightful to downright bizarre.

This church, buried halfway in lava rock, is all that remains of a Mexican village destroyed by a volcano.

Extraordinary sculpture garden created by an eccentric English poet.

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

The jewel of western Mexico's archaeological legacy is this tiered circular pyramid now covered in grass.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

Pop culture has helped to keep this iconic British building from being destroyed.

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

Northern Ireland's Brobdingnagian stepping stones.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

A museum marks and documents the site of the Titanic's launch.

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