The alleged house of the Virgin Mary is tucked away in a park and nature preserve on Mt. Koressos in Turkey and is holy to both Catholics and Muslims alike.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

Large miniature theme park with 100-plus models.

A charming beach town in Turkey captures all the colors of the rainbow.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

The deepest underground city in Turkey was designed to protect 20,000 people behind massive stone doors.

A Turkish ghost town abandoned in a population exchange with Greece.

A deadly ancient portal to the underworld.

This famous city eluded concrete detection until the early 2000's.

A marvel of Byzantine engineering under the streets of Istanbul.

Roman ruins top white travertine terraces formed by ancient hot springs.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

An inconspicuous footbridge beloved by San Diego locals.

This symbol of peace is appropriately positioned overlooking the Pacific Ocean.

This museum honors the first Spanish land grant in California which is still in the hands of the original owner's family.

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

Four hundred granite steps were built into this massive rock by the National Park Service.

Quite simply the largest tree in the world (by volume).

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The beautiful 1920 Pantages Theatre remains hidden just underneath the LA Downtown Jewelry Exchange.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Historic funicular railway, believed to be the shortest railroad in the world.