This elderly couple's hand-picked collection of rare gems is one of the finest in all of Iceland.

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

This fantastical waterfall is hidden in a cave located in a cracked cliff.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

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

One of the most remarkable caves in all of Iceland was created by a once raging river of lava.

Medicinal spa created with the discharge from a geothermal energy plant.

An encyclopedic collection of mammal penises.

The largest whale museum in Europe allows visitors to walk among life-size giants.

Fascination continues to surround one of history's most infamous shipwrecks.

One of the world's most complete mineralogical collections.

A small but industrious mining operation that allows visitors to touch precious gems while they are still in the rock.

Lima’s Museum of Anthropology is lined with thousands of elongated human craniums.

Tucked behind the Institute of Neurological Science down a decrepit street resides the largest display of human brains in Latin America.

The world's fifth tallest waterfall is a spectacular silver chute of water that cuts through the cloud forest in northern Peru.

One of the world's tallest waterfalls wasn't revealed to the world at large until 2006.

A turquoise lake within a volcanic crater.

A swing to dangle you off the very edge.

The world's widest single drop waterfall, and the two men who legend says went over its edge in a boat.

A nesting ground for four of the world’s seven marine turtle species, most of which are endangered.

In paradise, feral pigs have claimed an island all to themselves.

Inhospitable caverns just beneath this island paradise offer insights into alien worlds.

A glowing underwater cliff attracts marine life and divers in equal measure.

Cavernous opening completely encased in Karst limestone.