A massive marble foot is tucked away in a small alley near the Pantheon.

A statue representing a lost Roman profession that was vandalized for centuries.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The Pope’s secret escape route.

Architectural monsters are devouring this palace's every door and window.

Romans decided this 16th-century "talking statue" was so ugly, they named it after a primate.

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

The walls and streets of the ancient city are peppered with penises.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

Ancient snack bar of the Roman Empire re-opened.

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

More than 100 monumental tombs carved into rock are preserved at this ancient Nabataean site in the Arabian Desert.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

Lions carved into the rockface adorn these two tombs built into the mountains of Dadan.

Location of a reliquary containing bone fragments of 18 saints.

This tiny, hurricane-resistant house in Galveston is one of the city's most notable architectural oddities.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

This is one really big nut.

One of the most elaborate displays of Jellyfish is on display at the aquarium.