Underground monastery and fortress.

Small church on top of a huge rock column.

These Stalin-era industrial 'death traps' hang lifeless above the city

Unparalleled stargazing, one of Colombia's best observatories, and a swimming pool can all be found in the middle of this ancient tropical forest.

The world's tallest palm trees look like the whimsical kind of plant you'd find in a Dr. Seuss story.

A monument to the defenders of the Arctic in Murmansk, Russia.

A Swedish farm is the world's only producer of the rare, creamy delicacy that is moose cheese.

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

A cone-shaped top and cylindrical body set this 900-year-old structure apart from other Italian bell towers.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

A 10 million-ton rock once worshiped by the Tahamies Indians, accessed by an astounding staircase.

For six months of the year, three giant mirrors direct a pool of sunshine onto this otherwise occluded town.

This picturesque mansion has gone from opulent ruin to nature museum.

The villagers of the coldest inhabited place on Earth adjust to unique challenges presented by day-to-day living.

This Buddhist temple is home to the graves of the Japanese national legends, the 47 Ronin.

Shrine to Japanese water-goblins, complete with their preserved body parts.

The freshest fish here are the ones you catch yourself.

Large miniature theme park with 100-plus models.

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

Stunning examples of Russia's 18th-century wooden architecture.

Replica of mosque destroyed by Russia in the 16th century.

This attraction was abandoned after the Chernobyl disaster.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

Fortified homes of highland warriors that are still in use today.