The bell that once tolled atop a lost Edinburgh gate now hangs for all to see.

These wooden pipes were crucial to providing water to Medieval Edinburgh.

A double cantilever system bridge that was designed to prevent flood damage.

The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

A watering hole from the late 1800s in the heart of the Campsie Fells.

No one is sure what to do with this WWII shipwreck that sits at the bottom of the Thames, still loaded with tons of explosives.

In this quiet village, a blue plaque marks the spot where the famous fictional detective retired.

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.

In the Scottish Highlands, this 13th-century castle ruin is hidden at the end of a farm track.

A classic red phone box converted into an informal village library.

A failed infrastructure project now owns this unique moniker.

This short white tower is all that's left of Scotland's first permanently manned lighthouse.

A remnant of the Roman army's presence on the coast of Scotland.

A poignant mural honors the heroic teenage non-conformists who took on the Nazis and paid the ultimate price.

This impressive castle looms over small German town.

This watchtower once presided over the Berlin Wall.

Oddly enough, a pair of Wolfs funded the construction of this Little Red Riding Hood sculpture.

This massive statue is the personification of Bavaria and the first colossal statue of the modern period composed of bronze.

The site where a plot to assassinate Hitler was planned—and its conspirators were executed—is now a powerful memorial to the German resistance during World War II.

This red London phone booth once stood in front of Buckingham Palace and was used by the queen.

Centuries of warfare, tragedy, executions, and poetry come together in this 13th-century fortress.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

Nestled within a German forest is an intriguing, growing rock.

A ruined castle stands atop a hill surrounded by dragon lore.