Mexico's astounding mummy museum with "the world's smallest mummy."

The largest cave shaft in the world is home to thousands of birds and popular with BASE jumpers.

High atop a Mexican rainforest mountain, this ancient pyramid once drew pilgrims countries away.

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

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

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.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

One Costa Rican island is so beset by illegal shark poachers that the local rangers have built an entire bridge with their confiscated gear .

Where dogs like the rare "Fire-Tailed Border Cocker" run free on the mountainside.

This Costa Rican topiary park is a surreal garden of unearthly delights.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

The youngest volcano in Central America.

This restored colonial house was once home to the botanist responsible for bringing avocados to the U.S.

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

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

One of the world’s most colorful cemeteries, where each pigment is symbolic.

Volcanically heated hot springs.

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

An enormous, 30-story-deep hole in the middle of Guatemala City.