Hundreds of pieces of ancient Taíno art cover the walls of this Caribbean cave system.

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

Ancient barriers wrap around what was once an important stop along the Silk Road.

A former bastion of Rajput chivalry, this massive hill fort is the site of legend and tragedy.

The gondolas let you glimpse a bird's-eye view of one of the world's highest capital cities.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

This stunning sea creature-shaped home blends into the landscape like a fantasy villa.

This ancient goddess temple inspired the design of India’s Parliament House.

Two World War II aircraft lie within the jungle around this abandoned runway.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

The facade of this relic from the Klondike gold rush is decorated with over 8,800 pieces of driftwood.

One of the American Southwest's most extensive collections of Navajo rock art.

A sophisticated astronomical tower built by one of the greatest Persian scholars of the Islamic Golden Age.

The ruined doorway is a portal to the building's turbulent and torturous past.

The castle still holds traces of the abandoned Roman fort it was built atop.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

A spectacular rainbow of stained glass makes the "Pink Mosque" one of the most beautiful in Iran.

Dinosaur eggs were first discovered at these fiery red cliffs.

A secluded natural oasis hidden deep along a rainforest trail.

The abandoned ruins of a beautiful medieval castle just outside Barcelona.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

This magical place built as an astronomical center starred as a James Bond villain's lair.