This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

One of Ireland's most infamous prisons for rebels including men, women and children.

The ancient tomb acts as a calendar that keeps perfect time.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

Kenyan restaurant is a carnivore's paradise, serving exotic meats at its ultimate 'Beast of a Feast.'

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

Hoax, mistake, or evidence of dinosaurs in human times?

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

Sports history, made in the Arroyo Seco.

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

The juke joint where legendary soul artists ate, drank, and made merry.

This replica of the Greek structure is in the heart of Nashville.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

The world's longest known cave system.

A museum filled with tiny, adorable versions of the mighty Royal Danish Navy.

Looming communist pillar with a Czech twist.

A church of bones, decorated with 40,000 human skeletons.

This was once the center of the Birdman cult, and is now a World Heritage Site.

A Roman-style column in Oregon hides a spiral staircase inside.

Two massive rock outcroppings on the Oregon coastline.

The final resting place of soldiers' loyal canine companions.