Prehistoric park filled with the fossils of dozens of extinct species including Australian megafauna.

Not a single witness can attest to the creation of the world's largest geoglyph.

In the Flinders Ranges of South Australia, this marker marks the severe haven of War Kangaroos that once roamed here in the fictional parallel world of Kcymaerxthaere.

The largest collection of Indigenous Australian artifacts in the world, and the rare museum where wood-and-glass cabinets have trumped interactive exhibits.

A tunnel of hardened lava along Maui’s famous Road to Hana.

Site of James Cook's historic observations of the 1769 transit of Venus.

On the coast of Sardinia, a once-great mining village is finding new life as a coastal resort town.

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.

Stalactites and stalagmites in a beautifully lit cave.

Windblown rock formations in an ancient Roman quarry.

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

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

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

The glowing blue Nymphaeum of Emperor Tiberius.

The Emperor Tiberius' palace of debauchery.

A mushroom-shaped outcropping that has come to be the symbol for an entire town.

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

2300-year-old Roman road connecting the empire.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

Ever loyal to Roma, the small village of Albe in the Abruzzo region carried on until an earthquake did it in.

Host to the annual Festival of the Snakes.

A fiery-red region of scooped out land still largely untouched by civilization, tourists or otherwise.