A nature and cultural preserve named for its multitude of petroglyphs carved by the Northern Sinagua people.

Ancient pueblos built into the base of a natural canyon wall.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

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

Rippling sand dunes frozen in the Arizona rock.

This natural gas vent certainly earns its name as the smallest volcano in Italy.

"Stairs of the Turks", a chalky white cliff eroded conveniently into stairs, allowing for easy pillaging.

Beautiful views and Roman-style statues on the Italian coast.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

Europe’s oldest natural human mummy.

Rome's ancient Etruscan rival, now a park full of ruins.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

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

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

The giant skeleton sculpture is surprisingly well-traveled.

This winding road through an Italian canyon may be the most scenic drive in the world.

One of the largest caves in the world open to the public.

Romans built the world's tallest artificial waterfall in 271 BC.

Crushed coral and crystals give the sand its signature coloration.

This Italian foot path winds through the mountains via 52 individual tunnels.

Giant, pink stuffed rabbit on an Italian mountain.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

Stalactites and stalagmites in a beautifully lit cave.