Ancient serpentine sacrifice holder that has stood the test of time.

A marvel of Byzantine engineering under the streets of Istanbul.

This indoor ski resort has a mountain contained inside a mall.

The oldest known university in the world is in Fez, Morocco.

The other side is actually green.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

Traditional 11th-century outdoor tannery.

Pay your respects to a folk-punk legend.

The literary king of the Jazz Age was born in this lovely Minnesota home which still honors his legacy.

A museum devoted entirely to the rattlesnakes and snake-related art.

Once at the center of U.S. finance, the historic Trading Room was meticulously recreated piece by piece and rebuilt in the Art Institute.

Fragments of architectural wonders from around the globe are embedded in the newspaper building's walls.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Part museum, part piece of Arthurian-inspired history, this stately hall attracts King Arthur fans from miles away.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

Taxidermied animals galore, by appointment only.

The oldest working mechanical clock in the world.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

This luxury shopping lane has been protected by its own tiny police force for over a century.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

This one has sailed five times as far as Sir Francis Drake's famous ship.