Cavernous opening completely encased in Karst limestone.

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

Nature took her revenge on the "Wickedest City in the World."

Thousands of Haitians travel to the waterfalls to ask the Virgin Mary of Mount Carmel and her voodoo counterpart Erzulie for healing in a yearly pilgrimage.

This iconic fortress was once the crown jewel of Haiti's national defense.

Impressive sink holes fill this untouched old-growth forest in the Bahamas.

One man's love of sea life and art has turned his home into a temple of outsider island art.

An underwater road considered a possible Atlantis location.

The world’s largest underwater sculpture is found just off the coast of Nassau.

They squeal, they nosh, they look like predators.

In paradise, feral pigs have claimed an island all to themselves.

This skewed English house has looked like it's going to fall over for centuries.

This strange moor has a song written about it, Bronze Age carvings, and an alien sighting.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

Famously misunderstood wonder of the ancient world

Banksy gives themself artistic license with this piece of London street art.

A vibrant portrait celebrates the actress in her hometown.

The artwork immortalizes one of 20th-century Ireland's leading creatives.

The artwork is a community's ode to the "father of Irish tourism."

The inscribed stone at Kilnasaggart is a remnant from nearly a millennium ago.

It is said a heartbroken man visited the gap every day to stare blankly out at the sea.

This Neolithic passage tomb forms part of a World Heritage Site.

A Neolithic passage tomb said to have sheltered two legendary Irish lovers.