At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

This blowhole is supposedly caused by a trapped monster.

Launchpad for the US military’s dead mouse operation to battle millions of snakes.

The large fjord lake is thought to be the home of "Ogopogo," a giant sea serpent.

This iconic hilltop church doubled as a lighthouse in the 19th century, guiding ships into the port of Valparaíso.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

A very classy 1920s-era bar right in Grand Central Station.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

This trio of Dominican cave lakes comprise a colorful biosphere of natural life.

You may get stranded and everyone's peeing in the water, but at least there's cocktails!

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

In Costa Rica's cloud forest, the roots of a woody ficus create a botanical bridge.

Beach instrument turned bed and breakfast.

Whitewashed mosque contains the world's largest carpet.

Built on the foundations of an ancient Roman villa, the unique architecture of this castle on the Catalan coast was used as a set for 'Game of Thrones.'

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

This remote museum highlights the island’s impressive creative legacy.

The steel hull of a wrecked tug rests on Lobster Cove on Monhegan Island’s rocky southeastern shore.

A stone hut overlooking a picturesque bay once hosted picnics for the wealthy Gribbel family.

Forrest Gump ran past this iconic Maine lighthouse in his cinematic cross-country journey.

Mansion and shopping center used in the 1975 film "The Stepford Wives."

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

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

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.