Two stone columns flank the grand Venice square, but there were supposed to be three.

Go inside to really appreciate this 500-year-old technological masterpiece.

A new sculpture calls attention to climate change in the centuries-old city it threatens.

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

The place where World War I began.

Cabaret where the show girls are all androids, and the patrons couldn't be more pleased.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

Neo-cave art on the macro scale.

Once a favorite playground for the world's most illustrious guests, Hotel Nacional's secret weapons and bunkers reveal a more menacing side to its golden history.

These enlarged egg sculptures represent the native birds of eastern Iceland.

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

A sulfuric martian landscape that looks far better than it smells.

The oldest (maybe) swimming pool in Iceland is a stunning oasis built into the side of a lush hill.

The most powerful waterfall in all of Europe.

Three columns of volcanic rock shoot out of the ocean.

An encyclopedic collection of mammal penises.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

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

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

This is why we can't have nice things on the Incan Trail.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

If you’ve ever seen a picture of Machu Picchu, then you’ve seen a picture of Huayna Picchu—you just didn’t realize it.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.