This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

A moving memorial to the fallen and missing from WWI trenches.

A little sculpture with a large wardrobe.

A rare example of World War I trenches from the British front.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

Every year, the colorful murals of Montreal get a complete makeover.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

This plaque in one of London's oldest public hospitals commemorates the first meeting of two of Britain's most famous literary heroes: Sherlock Holmes and Dr. Watson.

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

A secluded green oasis amidst the towering skyscrapers, bears an unusual moniker that reflects one of the city's oldest guilds.

An ornate and disused early 20th-century building has been given new life as a fully operational structure, complete with offices, oyster bar, and a furniture retailer.

Chelsea's soldiers were given strict orders when crossing this historic bridge.

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

Tucked away behind the mansions of Mayfair, this picturesque garden is a hidden London treasure with a spooky past.

The ruins of a church destroyed by both the Great Fire of London and the Blitz, now turned into a peaceful garden.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

This once-controversial and slightly confusing statue of Achilles was built out of captured cannons.

The Great Fire of London and the regulation of one-way streets both started in this alley.

This unassuming building produced some of the world's most famous bells.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

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

A building that survived WWII, possibly on the virtue of its name alone.