The world's largest military aircraft cemetery.

Stairs often replace streets on the steep slopes of this old mining town.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

An urban laboratory.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A pair of giant roadside arrows are all that remains of a former Route 66 trading post.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

Go inside to really appreciate this 500-year-old technological masterpiece.

Breathtaking and huge 430 year old maps of Italy.

2300-year-old Roman road connecting the empire.

Jesus' footprints and the first catacombs in the world.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

If all members were present at the table, a sixth of the world's wealth would be under the same roof.

Georgia's first brewery is also one of its oldest surviving buildings.

The crumbling ruins of this southern American fort have survived storms, war, and cults.

A Cajun-style Christmas on the river also involves sky-high pyres and explosives.

By day this New Orleans square is for pedestrians, but by night it is a kingdom of kittens.

The second oldest continuously operating bar in Louisiana.

Officially named the "Loneliest Road in America," this barren stretch of Nevada road offers almost nothing but sky and open fields.

A gothic palace of endless stalagmites and pseudoscorpions waits within one of the world's most beautiful caves.

These huge stone ovens in the desert fueled the Nevada silver boom, and may have also been a hideout for outlaws.