This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

Giant, friendly pelicans in Central London, the most unlikely of places.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

Artists and musicians now rule over this former rail station.

Abstract dinosaur models in London.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

The remains of Crystal Palace Great Exhibition of 1851.

London's smallest police station is barely the size of a phone booth.

A 2000-year-old Roman amphitheater lies just below Guildhall Yard.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

This coffee shop lies hidden beneath a historic church.

The curios of pharmacist and collector Henry Wellcome.

Famously misunderstood wonder of the ancient world

An unusual round church in London with a Templar past.

Catacombs turned marketplace.

A student driver's nightmare.

Rebuilt remains of a temple to Roman god Mithras.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.