This feature of the city's aqueduct has achieved numismatic fame thanks to its appearance on Mexican banknotes.

This former 17th-century church now houses a university's public library along with several mural masterworks.

For decades, the parade of apostles that left the Expiatory Temple of Guadalajara remained hidden inside one of the towers.

One of the oldest hospitals in the Americas is now decorated in hallucinatory murals.

This church, buried halfway in lava rock, is all that remains of a Mexican village destroyed by a volcano.

Climb and walk into the crater of one of the youngest volcanoes on Earth.

This historic Mexican convent is home to a tree that grows crucifix-like thorns.

It was dubbed the "Garden of Plates" because it's covered in pieces of discarded dishes.

This baroque wonder is filled with a trove of artistic treasures.

When struck, the strange stones in this park ring like bells.

The ruins of an ancient pyramid built by the mysterious Chupícuaro civilization.

This sign designates the road that leads to the infamous Area 51.

A breathtaking 19th-century trail overlooks Lake Tahoe.

Experience a charming 1930s version of "infotainment."

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

Eastern zen meets Western grit in these four little trees growing out of a rock on Lake Tahoe’s Nevada shore.

An eatery for UFO seekers on the Extraterrestrial Highway.

In the middle of an extremely unforgiving and desolate high desert is the most secret military facility in the world.

20,000 pieces in a Frank Gehry-designed building.

Watch the ships come in on Michigan's 210 ft. high observation deck in Sault Ste. Marie.

Inside the Wayne County airport is an amazing collection of lights and sounds.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.