Cathedral carved out of salt, located a mile below the earth's surface.

This petite cutlery factory sits on the foundations of a defunct gasworks.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Every equinox this Maya pyramid puts on a spooky ancient light show.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

These winged Maya figures are the subject of speculation and conspiracies.

A mysterious, abandoned Chinese building in Mexico pays homage to the area's East Asian immigrants.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

At least seven hues of blue and turquoise make this freshwater lagoon unique.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

Along a coast that sees the annual migration of humpback whales, a geological formation that takes the shape of a whale’s tail.

The same water that fills a luxury resort’s pools feeds these free hot springs in the rainforest.

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

An unusual and beautiful form of mass transit serves the city's steepest neighborhoods.

Home to 23 voluptuous and instantly lovable sculptures by one of Latin America's most celebrated artists.

Two identical statues by Fernando Botero, one blown to pieces in a terrorist bombing, the other donated as a gift for peace.

A museum built around a bus-sized fossil on the side of the highway.

This colonial town in Colombia sits around the largest stone paved square in South America.

Colombia's biggest botanical garden contains plants from all across the country.

Pablo Neruda's custom-built lover's nest was made to remind him of the sea and named after his mistress' hair.

This fairytale house on the shore of a Chilean Lake oozes an eclectic mix of Chilote and German Cultural heritage.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

One of Auckland's oldest cemeteries was partially demolished during the construction of a major highway in the 1960s. 

The platform atop this verdant volcano was built with the help of a royal elephant.