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

This one has sailed five times as far as Sir Francis Drake's famous ship.

This Viking gravestone carved in a rare runic style was dug up from a London churchyard.

This 19th-century pub features stained-glass windows celebrating Victorian-era "champions."

The last four extravagant street signs of London's historic banking street.

No one knows who created the statues or if they are arranged properly—let alone the artwork's real name.

Public access to clean drinking water was an instant hit among the masses.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Two plaques commemorate the site of Shakespeare's first theatre.

A musical composition 1000 years in length plays at the Trinity Buoy Wharf in London.

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

A domino effect created with Britain’s iconic telephone boxes.

A historic arboretum and non-conformist, non-denominational park cemetery.

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

This home on a quiet suburban street is completely covered with vibrant mosaics.

This secluded walkway overlooks a magnificently wild London green space.

Following the trail of an old metro line, this scenic path is haunted by a creepy spriggan statue.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

This London plaque marks the spot where David Bowie's famous alien made his debut.

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

A clock designed to run with perfect accuracy for 10,000 years.

A statue marks the exact spot where The Boy Who Never Grows Up made his first literary appearance.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

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