The medieval legend behind this holy well was one of the inspirations behind "Alice's Adventures in Wonderland."

These ancient ruins were the final resting place of King Henry II's mistress.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

Rare and wonderfully wormy cadaver art captured in brass for centuries.

This coffee shop lies hidden beneath a historic church.

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

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

An archway adorned with vulnerable flora and fauna.

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

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

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.

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

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

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

A recently restored substation that dates from 1875.

Formerly known as Saville Theatre, this mid-20th-century entertainment hub includes an ornate frieze.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

Since 1887, this old-school shop has stacked its shelves with extraordinary coffees and teas.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

The Tudor-style cottage in the middle of the square is not quite what it seems.

Lurking among the classical architecture, rose gardens, and art of this historic country house—a crocodile in a bathtub.

This local celebrity earned his fame by doing a job no one else dared.

This unlikely memorial honors the Canadian and Portuguese laborers who felled trees for the Allies in World War I.