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.

A full-size replica of this well-preserved temple lets you take a walk through the Mayan age.

This staircase full of Mayan hieroglyphics is perhaps the largest single text in the world.

A massive underwater sinkhole made famous by Jacques Cousteau.

These roaring primates were considered a divine creature in the cosmology of the Maya.

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

Monkeys inhabit the lush forest surrounding ancient Mayan ruins once considered sacred.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

This orchid sanctuary protects countless varieties of the flower, from the huge to the microscopic.

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

A secluded, little-known temple hidden amid the dense jungle.

A battle between nature and architecture in the Cambodian jungle.

Bohol's mysterious brown hills.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.

Tel Aviv's popular neighborhood went though endless waves of transformation.

The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.

This subterranean funicular is one of the world's smallest subways.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

Macabre astrological automaton clock dating to the late 1400s.

This eclectic architectural gem played witness to Zurich’s colonial past.

Unconventional site where the tracks of Zurich tramcars intersect.

Featuring a meatless buffet fit for kings, this family-owned Zurich eatery is considered the oldest vegetarian restaurant in the West.