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

This fantastical house shaped like a seashell brings aquatic design to architecture.

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

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

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

Frida Kahlo's childhood home, now a museum of her life and works.

These azure waters were thought to lead to the Mayan Underworld.

Extraordinary sculpture garden created by an eccentric English poet.

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

Underwater art project will double as a massive artificial coral reef to help regenerate the damaged ecosystem.

A gargantuan crystal kingdom.

An Aztec snake god has taken the material form of an apartment complex.

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

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

Hoodoos, naturally eroded land formations, stand 20 feet tall in the Canadian badlands.

This mill on Lake Erie appears to shrink as a viewer approaches thanks to an optical illusion.

Profile of a sleeping person 4km long in 250m high cliffs.

Natural earth mounds formed in the far north.

A sleepy little town that had the greatest landslide in North American history fall on it.

An island said to shake with the current.

Little island known for its massive beachfront "flowerpot" pillars.

A face emerges from the landscape when seen from the air.

This tiny square mile of Canadian sand was once considered the world's smallest desert.

Webcam that broadcast the hatching of Bald Eagles to millions of viewers.