In 1990, this 37-foot red steel bottle sailed from New York to England.

Now famous as the "Harry Potter bridge," this impressive concrete viaduct has long been an icon in its own right.

A close look reveals that the Scottish monument is just slightly off-kilter.

A solemn memorial in a majestic setting that honors a 1692 tragedy.

The location of the Bridge of Death and the Gorge of Eternal Peril in "Monty Python and the Holy Grail."

An 11th-century Viking gravestone in a Victorian parish church graveyard.

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

This eclectic sanctuary is a hodgepodge of various architectural styles, all crammed into one building.

Overlooking a Scottish loch, this beautifully crumbling castle once inspired a poem by William Wordsworth.

This Victorian footbridge over the River Tees was originally built to carry water from the high moorland to the industrial towns on the coast.

This building was once a town hall, a fire station, a prison, a dairy market, and the target for two marksmen.

A little-known ruin with a convoluted history and a fascinating latrine drainage system.

This hidden natural fountain issues forth a steady supply of supposedly healing water that tastes like rotten eggs.

This bridge once allowed Dere Street to cross the River Tees.

An abandoned Yorkshire castle that is hidden in plain sight.

A vintage fire engine is hidden inside this World War I-era water tower.

The church and nearby castle are all that remains of a medieval village, mysteriously abandoned.

Derelict chemical plant on the North Sea is a beautiful industrial ruin.

This memorial honors the first British soldier killed by enemy action on home soil during World War I.

This sculpture honors a long-beloved English comic strip in the main character's hometown.

The oldest warship in Europe is still afloat.

The legend of a monkey that was hanged as a spy has inspired not only a football team name, but a successful mayoral campaign.