You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

Underneath this water pump, Annie Sullivan helped Keller speak her first words.

Famous for its bio-luminescent inhabitants, known as "dismalites."

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

The Swiss hilltop housed an early 20th-century vegetarian nudist colony.

The exorbitant price of paradise.

This public bathroom takes the form of a 19th-century lighthouse that once stood on the spot.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

A beautiful Gilded Age hotel in the White Mountains with surprising diplomatic history.

Inside this old mill is a collection of images that will always remain frozen in time.

Belly up to the bar in Cowtown, don't forget to buy some boots.

The "world’s largest honky-tonk" also has its own indoor rodeo arena.

A modernist landscape of water and sci-fi concrete.

This strategically-placed fountain creates the magnificent illusion of mustangs galloping across a river.

A few times a day, you can see an animatronic cowboy shoot-out.

A city park that sits on top of a freeway.

A symbol of Texas pride.

This theatre was made famous after Lee Harvey Oswald was captured inside watching a film.

Millions of years of erosion created the feature for which this rock formation is aptly named.

On Waikīkī Beach, a monument to four extraordinary individuals of dual male and female spirits who brought the healing arts from Tahiti to Hawai'i.

This saltwater swimming pool, which is the last of its kind in the United States, is slowly crumbling within sight of multiple high-end beachside hotels.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

An historic, one-lane, pedestrian suspension bridge on Kauai.

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