The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

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

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

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

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

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

New Orleans' famous cemetery, located on the site of a former race track.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

This sheep farm has been forever transformed since being built for “The Hobbit” film series.

When ecosystems collide in the arid Southwest.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Northern Ireland's Brobdingnagian stepping stones.

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

The Boston square dedicated to the dark poet who was born nearby.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

An ancient capital city that dates back 3,000 years and harbors many surprises.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.