The largest stone moved during the Stone Age once stood proudly in France.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

The first archaeological site discovered by aerial photography.

This site contains overlapping ancient graveyards that existed about 1,000 years apart.

The discovery of this Neolithic settlement, which contained a Stone Age "cathedral," threw archaeologists for a loop.

This standing stone has a unique backdrop thanks to some of the United Kingdom's best-rated beaches.

A huge Megalithic chamber tomb located behind a cafe.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

These megalithic tombs contain some of the largest stones ever moved in prehistory.

With a history dating back to Victorian times, this architectural gem is a rare New York tourist haunt worth visiting.

Every Friday night, Appalachian string-bands turn this country store and soda fountain into a raucous jamboree.

A charming tour of the umbrella, tin-can, and drinking-straw capital of the world.

The celebrated eyesore created by starry-eyed sweethearts.

The way that light hits a stained glass window on a specific day is one of many "clues" to a mysterious treasure.

The lost Latin words were reconstructed using the holes from the nails that once pinned them in place.

The remains of the medieval wall that once surrounded Paris with ties to the construction of the Louvre.

The site where two doves fell in love.

This mysterious sculpture was thought to symbolize a world ravaged by misery.

This pair of running lions engraved on animal bone is one of the earliest artistic depictions of big cats.

This tiny cafe is one of the last meeting places of its kind, allowing revolutionaries a place to plot.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."