Circus cemetery for all the “showmen under God’s big top.”

Along the historic Mother Road is an old gas station with a secret counterfeiting past.

A gleaming white tower in ornate Indian style soars above the low-slung bungalows of north Tampa.

This kitsch eatery is chock-a-block with bric-a-brac.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.

The largest retailer of seashells in the world.

This ancient sinkhole-turned-healing-pool is a treasure trove of archeological discoveries and may even be the Fountain of Youth.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

This video store is a horror buff's dream.

The Emperor Tiberius' palace of debauchery.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

The Bourbon royal family had this unique octagonal hunting "cottage" built on a tiny islet in Lake Fusaro.

A tree that defies gravity grows in an ancient ruin.

Italy's "New Mountain" rose from the ground in a volcanic eruption in 1538.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

Suffocating dogs was a common spectacle in the fumes of this noxious cave.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

Ancient snack bar of the Roman Empire re-opened.

The walls and streets of the ancient city are peppered with penises.

A sulfuric hellscape in southern Italy.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

These "anatomical machines" are only one of the many strange items in this Italian crypt.