Marine fossils from the Devonian period are exposed at this park.

This stately clubhouse has showcased German-American culture for over a century.

The alley connecting two of country music’s most historic venues has a rich history of its own.

This replica of the Greek structure is in the heart of Nashville.

One of the most photographed locations in the entire city.

The only ancient site that remains on the south bank of the sacred Ilissos river.

Where commuters walk through remnants of an ancient Greek necropolis.

Legend says this sacred tree was a gift from goddess Athena.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

Giant marble phalluses on the sacred island of antiquity.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

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

The longest navigable underground river in the United States is home to countless blind and albino animals.

More than 3,200 cookie jars line the walls and shelves of this little shop and over 1,000 salt and pepper shakers

This hidden stream beneath Indianapolis makes an appearance in the best-selling novel "Underground Airlines."

Home to a collection of artifacts and specimens from one of the world's preeminent geologists

One tree's homage to soles past and present.

The world's largest anatomically accurate brain sculpture.

A hidden network of subterranean passageways lies tangled beneath Indianapolis' bustling City Market.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

You were once able to challenge a chicken to tic-tac-toe at this park, which is now converted into the Aikman Wildlife Adventure.

The palatial McDonald's that inspired Wesley Willis.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.