These mammoth-yet-narrow crevasses in the Earth are perfect for taking an otherworldly swim.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

Ecuador's largest Incan ruins show evidence of sophisticated irrigation and diplomacy among the ancient builders.

A swing to dangle you off the very edge.

The remnants of an archaeological camp stand within Tikal National Park.

Hidden deep in the Guatemalan jungle is a turquoise paradise of natural pools, caves, and waterfalls.

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

The ruins of an ancient city built by Mayan traders is centered around a temple of a sacred feathered serpent deity.

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

Inside this mountain lies several kilometers of breathtaking caves.

An ancient system of freshwater caves filled with animal bones, including that of species long-extinct.

Stained glass windows bathe this botanical garden in cosmic light.

Shocking dioramas of human torture, meant to promote human rights awareness.

The jewel of western Mexico's archaeological legacy is this tiered circular pyramid now covered in grass.

A flooded Mexican cave that hides a river beneath the water.

The enigmatic and seldom visited ruins of a Mayan city-state.

The winter home of millions of migrating monarch butterflies.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

Diego Rivera's massive tiled fountain and failed infrastructure project.

The ruins of an ancient Mayan city, beautifully preserved and only accessible by boat.

Two waterfalls flow down the cliff faces decorated with rare natural basalt columns.

A uniquely robust and historic look at Mexico's omnipresent dance with Death.

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

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.