Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

A small plaque highlights the damage caused by German air raids during World War II.

An architectural oddity hides in plain sight on this iconic London bridge.

The house where the writer spent his formative years.

Stunning Roman aqueduct used for 1900 years and still standing.

Long tunnels run under the ancient chariot racing circuit to the tower.

This amazing piece of modern art honors the hundreds of fishermen killed during Cambrils' "year of misfortunes."

An elaborately decorated house sits on an otherwise quiet street.

Belfast's namesake river still winds below the city center, hidden from sight.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

This singular Irish dolmen is more Frank Lloyd Wright than upright stonehenge.

This natural sea arch highlights Ireland's rugged coastal beauty.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

It was once nicknamed "the most bombed hotel in Europe."

These barriers stand as stark reminders of Northern Ireland's troubled past.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

A museum marks and documents the site of the Titanic's launch.

You will not be able to miss this building.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This one has sailed five times as far as Sir Francis Drake's famous ship.