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

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

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

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

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

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

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

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

A gargantuan crystal kingdom.

Taoism, Buddhist and Confucianism are all represented in this temple that claims to answer anyone's wishes.

This naval gun is fired every day at noon, an odd timekeeping tradition the origin of which is local legend.

A serene space tucked amid the skyscrapers of Hong Kong's bustling financial district.

A station built to repel pirates now attracts wealthy vacationers.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Thousands of abandoned statues of deities are taken to this hillside in southern Hong Kong.

A pair of trees near a Hong Kong shrine are said to grant wishes, but only the ones they hold on to.

Climb to the top of the world's largest seated bronze Buddha.

Take a cruise with no movement but plenty of style in this one-of-a-kind boat mall.

In Hong Kong, a fairytale flower tunnel is hidden within the gardens of a public housing complex.

A colossal floating restaurant built to look like a ancient Chinese imperial palace.

This hulking behemoth is actually five interconnected towers built in the 1960s.

Teeming with illegal goods and services, this towering maze of vice is also a popular tourist accommodation.

Remnants of the most densely packed city in world history, that thrived on anarchy for 30 years.

It's the only museum of its kind in Ukraine.