An archway adorned with vulnerable flora and fauna.

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

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

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

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

A living memorial to the trees London lost during the Great Storm of 1987.

An agreement meant to honor the Duke of Buckingham led to this unusually-named passageway near Charing Cross.

England's most famous front door has an accidental doppelganger.

The pretty iron lamp is a reminder of the architecture underneath London's streets.

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

This ancient Egyptian obelisk still bears the wounds of World War I.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

The bronze uniforms commemorate the vital role of women during World War II.

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

Hidden beneath the streets of London is a secret subway that only carried mail.

A tribute to the intrepid explorer and his crew who perished in terrible conditions on an ill-fated expedition to the Arctic.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

These stained-glass windows are all that remains of a building that was the target of one of the biggest explosions in London after World War II.

The plunge pool is a surviving relic of a rowdy royal residence.

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

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

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

The sculpture of the deceased cockatoo flops atop its personal plinth.

The world's largest collection of ship figureheads includes figures from legends and history alike, from Sir Lancelot to Abraham Lincoln.