Used as an example in one of the first dictionary entries for "museum" in 1706.

Hidden in plain sight, this creepy sculpture watches from above.

The spot where three Protestant clergymen were burned at the stake during the reign of "Bloody Mary."

An extraordinary collection of scientific instruments - and Einstein's chalkboard - inside the world's oldest purpose built museum building.

A 26-foot shark sculpture—a statement about bombs—set off a municipal battle royale.

This trio of neolithic stone monuments are fabled to be a king and his knights that were petrified by a witch.

Giant naked man on a hillside.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

Museum celebrating the history of computers, especially their role in codebreaking.

The intended purpose of this unfinished Elizabethan building remains a mystery.

The Stonehenge of Wales is one of the grandest neolithic dolmens still in existence.

At the United Kingdom's only residential library you can sleep among the books.

The castle still holds traces of the abandoned Roman fort it was built atop.

Recently restored menagerie of Victorian-era beasts.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

An enormous, inside-out glass globe built in 1935.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

Look closely and you’ll notice that the color changes a third of the way up the tower.

An overlooked memorial honoring the local Washington residents who died in World War I.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The most accurate timepiece in the world.