Cathedral carved out of salt, located a mile below the Earth's surface.

Towering high above the neighborhood of La Candelaria, the church is easily recognizable by its distinctive red-and-white striped facade.

A celebration of Colombia’s premier contemporary artist.

This narrow street is packed with street vendors and bars selling chicha.

This Bogotá museum houses the world's largest collection of pre-Columbian gold relics.

Pilgrims each carried a brick to the top of Mount Monserrate to help build this historic sanctuary in Colombia.

Every Sunday, Bogotá turns 75 miles of its city streets into a bicycle superhighway.

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.

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

You can release a young butterfly at this beautiful indoor garden.

The only castle in North America to ever house European sovereigns.

The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

This hotel is an amazing example of the Escuela Tapatía de Arquitectura movement.

A fabulously bizarre surrealist sculpture by the late artist Leonora Carrington.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

One of few surviving standpipe water towers in the U.S.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

A chessmaster's dream destination.

An urban forest overtakes what was the greatest failure of utopic urban housing.

Less a museum than a bizarre fantasy world created by artists and engineers.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

One of the world's earliest skyscrapers.