Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

These ornate arches show how the course of the River Thames has changed.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

Every St. Andrews student knows to avoid this inscription for fear of a martyr's curse.

Bronze plates placed around this Scottish fishing village form a true-scale model of the solar system.

A well-preserved 2nd century fort where moles are the archaeologists.

A bronze tribute to the wildly popular video game from the '90s.

The Tudor-style cottage in the middle of the square is not quite what it seems.

A unique tribute to the millions of animals who served and died for the British military.

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

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

One of the shortest streets in York has an especially odd name.

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

This enchanting Victorian estate was home to the world's first hydroelectric power generator.

A nuclear bunker built to shelter the politicians and important people of Scotland in case of nuclear attack.

The main gates have been locked since 1745 and will remain so until the Stuart Dynasty returns to the throne.

Children's hospital in London that operates on royalties received from Peter Pan, which J.M. Barrie signed over in 1929.

A portly statue of a golden boy commemorates an unusual cause of the Great Fire of London: the sin of gluttony.