A dozen cast iron leopards stand guard along the length of Aberdeen's Union Bridge.

Scotland's oldest medieval bridge is also among the last reminders of early medieval Aberdeen.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

This incredible stone temple is a monument to death, victory, and fantasy architecture.

This hill is all that remains of Cambridge’s former castle.

An extraordinary library and archive dedicated to the history of the Arctic and Antarctic poles.

Students can borrow artwork from this gallery to display in their own residences.

A complicated contraption for telling time by the moon.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

An ordinary lamppost situated in the middle of Cambridge has an unusual moniker and history.

Named after a lodging site that existed nearby, a bridge has existed at this location since 1455.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

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

A museum wholly devoted to juvenescence.

The largest Victorian water tower in Britain.

Dating back to the early 12th century, this is the first Augustinian priory established in England.

It's believed emperor Hadrian himself funded this once architectural wonder.

There's an exclusive Beefeaters pub hidden in the Tower of London.

The monster at the center of the Darwin Center Spirit Collection.

Repository for more than 22 million pickled specimens.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Eighty million natural history specimens call this gargantuan museum home.