A natural tidal swimming pool is ringed by bizarrely artistic lava rock formations.

A city continually buried under the ash of a volcano that has been erupting for more than 15 years.

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 tiny tropical village was sick of anonymity so the locals made this sign, which actually changed the name of the town.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

This subterranean disco dance club in a Cuban cave comes with bright lights and a dark legend.

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

They squeal, they nosh, they look like predators.

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

This Vietnamese hell cave lets visitors take a walk through a devilish underworld full of demons.

World's largest cave was only discovered in 1991, and now offers tours to the public.

Beautiful palace stands tall over the Fergana Valley.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

The Avenue of Mausolea is a series of grand palatial tombs.

A cave covered with bizarre stalactites of cloth.

A fiery crater has been burning in the Karakum Desert since 1971.

Described as "the world's most blinging pool."

This extensive collection of dead bugs may be the world's most idiosyncratic and personal insect museum.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

An enormous dragon scales the walls of this 17-story temple.

Stunning wetlands ablaze with pink lotus flowers.

The largest dam in the world and the site of a potential disaster.

An extraordinary natural landscape of mountains, waterfalls, and rocky cliffs riddled with tunnels.

Grandpa Rainbow felt the neighborhood needed some color, so he picked up a paintbrush and went to work.