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 eye-popping Icelandic crater lake is surrounded by red volcanic rock.

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

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

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

A memorial to the tens of thousands of Irish who fled to North America during the Great Famine.

Ozymandias’ time-keeping temple.

Slum Settlement Filled With Mountains of Garbage.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

This stunning concert hall has become a symbol of Iceland's national recovery.

This tiny museum's sizable collection is jammed into a former underground public toilet.

An encyclopedic collection of mammal penises.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

An old-timey peepshow allows visitors to gawk at some of the world's most freakishly large footwear.

A wall of chewing gum moonlights as collective art.

This former coal gasification plant found a curious second life as a popular public park.

A 400-year-old mummified arm dangles from the ceiling of St. James the Greater, serving as a warning to thieves.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

What looks like a suicide in progress is actually a statue of Sigmund Freud.

A turn of the century building boasting some of the most beautiful art nouveau architecture in Prague.

Looming communist pillar with a Czech twist.