The site of Paul Revere's historic two lantern warning.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

A bit of retro transportation flair preserved in the world's largest department store.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Elevated freight railway turned wildly successful urban park.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

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

The atmospheric road was never meant to be so creepy.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

Displaced highlanders would take shelter from the wet Scottish climate under the large walled bridge at Glasgow Central Station.

Old-fashioned knowledge and modern engineering create the world's only rotating boatlift.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

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

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

A red-brick beacon stands against the tempestuous Atlantic, on the windiest site in the United Kingdom.

A whale's jawbone and a malfunctioning harpoon welcome you to the village of Bragar and its lore.

A magnificent, iconic stone tower in the Scottish Highlands.

A fantastic castle rumored to be the birthplace of King Arthur.

It is said the legendary wizard once lived in this sea cave beneath Tintagel Castle.

A miniature village mimics the surrounding buildings so well it includes itself.

An 18th-century lighthouse built on a 16th-century castle is now a monument to the maritime beacons of Scotland.