As one of the world's largest hydroelectric dams this plant took two countries to get built.

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

Because sometimes the most efficient route from A to B isn't a straight line.

If you visit Santa's village, you can get your passport stamped to show you crossed into the Arctic Circle.

Roughly 17 million letters to Santa have found their way to this Arctic Circle post office.

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

An exceptional assortment of fossils recovered from private collections.

A beloved tribute to the Fab Four and the freedoms they inspired.

The grassy landscape is home to the world's last truly wild horses.

A huge communist-era propaganda monument and mural that offers stunning views of the Mongolian capital.

Whitewashed mosque contains the world's largest carpet.

On any given day this sprawling market houses literally tons of government-regulated gold, gems, and precious metals.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

Erected in 1803, it is the first astronomical observatory that was built in the Americas.

This tiny shop has been serving traditional tamales for more than 200 years.

Storied crypts fill the most famous cemetery in Colombia.

The world's first crowdfunded skyscraper has not gone quite to plan.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

A celebration of Colombia’s premier contemporary artist.

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

Thermal springs underneath the seabed provide the heat and bubbles for these beachside natural hot tubs.