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

The bizarre visions of H.R. Giger, tucked away in a Swiss medieval city.

This mountain trail inspired Nietzsche to complete his magnum opus.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Liechtenstein's royal family calls this medieval alpine castle home.

Tens of thousands of ancient rock carvings hidden in the heart of a French national park.

A former pyramid-shaped library with colorful murals lies just across the bay from Old San Juan.

The subtle interplay of fire and water is hard to ignore at this remote Jamaican spring.

An eccentric German artist built this weird and wondrous castle packed with shocking sculptures and alien art.

This popular tourist cave was ignored for almost 200 years before being mined into an attraction.

One of the deepest blue holes in the world.

A beautiful gorge filled with streams and waterfalls.

Famously misunderstood wonder of the ancient world

Horse cemetery on the grounds of Blarney Castle.

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

Single runway interrupted by a busy road that cuts across its middle.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

This futuristic building is yet another architectural wonder in Dubai.

The world's largest frame offers spectacular views of the city's past and present.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

This indoor ski resort has a mountain contained inside a mall.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

When North America was covered in ice, this was an oasis in the frozen desert.