Ancient paintings known as the "Sistine Chapel of Cave Art."

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

A 16th-century fountain marks the site of a lost medieval cemetery once filled with mass graves.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

The cave of a 12th-century hermit is still visited and venerated today.

This Luxembourg cave is covered in cryptic looking marks left by mining activity.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

A 12th-century castle featuring a sensory path where partially-sighted visitors can experience regional history through touch and sound.

Resting peacefully between two majestically-slanted trees, this roadside water trough circulates water peacefully.

Two standing giants remain as a tribute to Luxembourg's metallurgical past.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.

A burial ground for workers at one of Hawai'i's largest sugarcane producers that laid buried for decades.

An historic, one-lane, pedestrian suspension bridge on Kauai.

This student-run nightclub was originally a World War II bomb shelter.

A 10-meter totem pole stands as a tribute to Seattle’s sister city of Bergen, Norway.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A sweet tribute to Georgia's official state vegetable, which even has its own mascot: "Yumion."

FDR hoped to find a cure for polio in this Georgia town's warm springs.

Designed by famed architect Horace King.

The largest retailer of seashells in the world.

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

The bizarre story of the mysterious death and hidden treasure of one of Sanibel Island's early homesteaders.

In a city crazy for seashells this museum educates and amazes visitors using the wonder of cast-off exoskeletons.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.