Relics of the 1894 Midwinter Exposition continue to delight visitors today.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Cavernous opening completely encased in Karst limestone.

These roaring primates were considered a divine creature in the cosmology of the Maya.

Deep in the Guatemalan jungle stands an ancient pyramid that once marked the reign of a king.

A little sculpture with a large wardrobe.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

Established in 1638 to battle the Black Death, this botanical garden is a treasure trove of rare flora.

Museum preserving torture methods from the past.

Ancient snack bar of the Roman Empire re-opened.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

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

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

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

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

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

A rather vulgar example of the transition from Latin to the Italian vernacular.

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

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

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

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.