One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

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

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

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

Found down a long dirt road, a sacred Mexican cenote and 18th-century hacienda remain hidden.

A fascinating little museum all about the rich history of Peru’s famous plant.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

The stones of this Incan wall complex fit together so well you couldn't fit a piece of paper between some of them.

These steeply terraced ruins are a stop along the Inca Trail to Machu Picchu.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Life and death are on parade at the most reliably perilous site of “the Great Migration.”

The ritual has been performed uninterrupted for nearly 700 years.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Hear the quietest sound from across the dome.

One of two giant blue cockerel statues erected with an intentional double meaning.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

It houses the remains of a 17th-century version of the Titanic.