Where the Border Reivers of the Johnstone clan used to hide their stolen cattle.

A significant example of Czech cubist architecture—a style you won't find anywhere else in the world.

A retro Yugoslav congress, cultural, and business hall built in the 1970s, with an iconic world clock.

A brother statue swap has adorned this building's facade for centuries.

Local folklore claims that this wall was not built for defense, but to provide labor during a time of famine.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

This luxury shopping lane has been protected by its own tiny police force for over a century.

At the top of the hour, figures of the London department store's two co-founders emerge and bow to each other.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

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.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.

The British monarchy's stamp collection is one of the most impressive in all of Europe revealing generations of royal nerdery.

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

Outside of one of Britain's most renowned social clubs, a step installed specifically for the Duke.

The final resting place of a German diplomat's beloved companion.

Behind one of the world's most impenetrable vaults is a massive collection of retail silver.

The taxidermied remains of a once-great parrot.

This inn of the court provides a fascinating window into London’s legal and architectural history.

Dictionary Johnson’s favorite feline.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

Buried for centuries, this hidden cellar is all that remains of London's medieval Whitefriars Monastery.

One of the few remaining examples of 19th-century London’s attempt to clean up its reputation.

This Underground station has been a popular filming location for decades, even before it closed.