The world's most remote airport.

What was once a unique system of urban elevators is turning into a mechanical ruin.

The largest stone moai on Rapa Nui.

The design of the Palacio Salvo has been described as "a lighthouse on top of a building."

A memorial to the victims of Argentina's "Dirty War."

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

A bright little alley in La Boca is a part of tango history.

Buenos Aires' city of the dead contains some very famous remains, including Eva Perón.

A series of waterfalls so massive they straddle the border of Argentina and Brazil.

This stunning mass of ice spans 121 square miles and is still growing.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

In terms of history and architecture, this is one of the most remarkable cemeteries in the world.

One of the world's steepest streets seems to have houses sliding down it.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

This strange geological landscape erupts with sudden bursts of water.

At this unique temple in Darjeeling, Hindu and Buddhist practices co-exist harmoniously.

Over 3 miles up in the Himalayas this pass is one of the highest drivable roads in the world.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

This opulent 16th-century Maharaja’s palace is a unique mix of Hindu and Muslim designs.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

A blooming house of worship for the masses.

This peaceful Sikh gurudwara serves around 50,000 free meals every day within its gilded walls.

The world's second-largest sundial, made entirely out of stone.

Sacred Indian temple that’s all monkey business.