The commemorative stone column conceals a secret laboratory.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

More than a million titles fill the labyrinthine shelves of this prestigious private library.

Claiming to be the oldest hat store in the world, this historic haberdashery had a hand (and a head) in the creation of the Bowler.

Colorful murals by Jean Cocteau hide within this peaceful London sanctuary.

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

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

After nearly 60 years, there's still a bear at Paddington Station looking for help.

The largest portal tomb in Europe has a capstone weighing around 150 tons.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

A proud bronze billy stands as an eternal symbol of Ireland's oldest festival, where a goat is made king.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

An oddly conical beacon perched atop beautiful Irish cliffs.

This floating garden in the sky is straight out of a fairy tale, but the real thing is nothing short of magical.

One of the most popular megalithic sites in Ireland stands as a humbler version of Stonehenge.

Remnants of a Victorian garden feature sitting in public woodland.

A wonderfully eclectic Victorian aquarium lies in the basement of the Horniman Museum.

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

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

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

A student driver's nightmare.

The bar where "The Great Train Robbery" was planned was once a nexus of high society and low morals.

A small museum that celebrates the history and culture of the LGBTQ community in England.

This knockout museum lies in a sleepy corner of London.