Carved initials which are nearly 500 years old preserve the deposed Queen's presence at Hampton Court Palace.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

This restaurant's specialty is "a major enigma for food historians."

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

A remarkable feat of Victorian engineering across the Firth of Forth.

This cannonball embedded in the side of an Edinburgh house once served a surprisingly pedestrian purpose.

This Scottish graveyard is the final resting place of the man who inspired the character Ebenezer Scrooge.

This 16th-century close preserves an unusual piece of Edinburgh's transportation history.

The colorful stairs are made with marble from the world's major quarries.

This early version of the guillotine was used to execute the man responsible for its construction.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

Largest lake in Great Britain measured by surface area.

The heads of two giant mythological water horses honor Scotland's horselord past.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

One of the largest lenses of its kind ever created, this former ship beacon has been brought down to Earth.

This massive monument has been telling the time for 150 years—at a slight angle.

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

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

A trail of "Game of Thrones"-themed doors carved from fallen trees from the iconic Dark Hedges.

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

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

The statue honors a beloved bird that once roamed St. George's Market.

The only monument to name all of the passengers and crew who died on the RMS Titanic.