A large replica of a monumental Roman inscription is located on the side of this museum.

One of Rome's most picturesque and original bridges was also a popular choice for Grand Tour artists.

A 15th-century monumental Latin inscription on this house celebrates Lorenzo Manilio's love for Rome.

The charred, dead skeleton of an oak tree is said to have consoled a dying 16th-century Italian poet.

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

The remains of this 2nd-century Roman temple are incorporated into a modern building.

A colossal aqueduct from the second century B.C., deeply hidden in a gorge on the outskirts of Rome.

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

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

A stunning Victorian abbey and walled garden on a lakefront.

A hugely vast Irish landscape of barren rock that stretches for miles.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

This stunning concert hall has become a symbol of Iceland's national recovery.

A formerly glacier-tipped volcano that inspired none other than Jules Verne.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

This elegant arc of a waterfall marks a religious turning point.

An encyclopedic collection of mammal penises.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Medicinal spa created with the discharge from a geothermal energy plant.

This trio of Australian rock spires may have inspired aboriginal legend or just modern tourism.

Nine limestone rock stacks on Australia's "Shipwreck Coast."

An unphotographable nightly march of tens of thousands of "fairy penguins" from sea to shore.

A clear example of the process of erosion in action.

The only pollutant in the clear blue water is sunscreen.