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

An indigenous take on European design creates a stunning visual overload.

This castle-like building in Manhattan helped destigmatize cancer in the 19th century.

The real-life site of Ichabod Crane's infamous gourd attack.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

Haunted Victorian house that inspired a legendary "Ghostbusters" court ruling.

A pair of gigantic baby heads greet passengers at Atocha Station.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

The sister plane of the C-123 shot down during the Iran-Contra Affair has found a new purpose in retirement.

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

Pablo Neruda's custom-built lover's nest was made to remind him of the sea and named after his mistress' hair.

What was once a unique system of urban elevators is turning into a mechanical ruin.

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

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

Diego Rivera hid various people and symbols in his first large-scale mural project.

These spectacular, symbolic serpents lie within the shadow of the Great Temple.

A vast necropolis where you'll find the elaborate mausoleums of Argentinian tango stars.

A beautiful young girl said to have been buried alive in her coffin…

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

Few of the many visitors to this resort town know of its hidden Maya ruins.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

The notorious headquarters of a corrupt political machine.

A reminder to choose water over wine since 1888.

The beautiful tunnel that ran from the lobby to Penn Station is still hidden underneath 34th Street.