The second-longest pier in the U.K. stretches a whole kilometer into the Irish Sea.

A fantastic example of Victorian railway engineering with two unusual decorative features.

The town of Argleton has a postal code and appears on maps and even real estate listings, yet it does not exist.

Locals spent years successfully fighting to save this beloved Brutalist behemoth from demolition.

The train platform where Jews were sent to concentration camps is now preserved as a Holocaust memorial.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

The mark of the Devil's horns on a marble column in Milan.

The secret medieval communication system will whisk your words above the noise of the crowd.

A brutalist gem towering over the heart of Milan.

The Swiss hilltop housed an early 20th-century vegetarian nudist colony.

One of the oldest amusement rides in existence was a huge disappointment to its creator.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

The recreated ruins of a house designed to memorialize a World War I shelling on the town.

These 20-foot jaw bones honor a time when the leviathan bones were a sign that whalers survived the hunt.

This plaque commemorates an amazing 19th-century sea rescue.

This coin collecting cod is over 130 years old, and the United Kingdom's smallest listed structure.

A seaside town with no sea in sight.

This historic textile mill has been repurposed as a shopping outlet, which houses a textile museum that celebrates its industrial past.

Hundreds of years ago, this lion-shaped door knocker could help a person accused of a crime find temporary safe haven in Durham Cathedral.

This Bronze Age boat was found buried remarkably intact in an English gravel pit.

The western face was supposedly left clock-less to snub the Welsh.

A rare wooden coffin set vertically into the Gothic arch of an ruined church.