The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

The fantastic charm of England's oldest botanical garden has made it a place of writerly inspiration for centuries.

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

This open-air mosaic gallery honoring an English artist took hundreds of volunteers more than seven years to create.

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

This 18th-century fort surrounded by a moat was used to store gun powder and ammunition, and now sits in the middle of a large part in Dublin.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

This supermarket offers shoppers a window into the past alongside their groceries.

One of Ireland's most infamous prisons for rebels including men, women and children.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

A striking 12th-century-style castle built on the edge of a cliff.

Remnants of a cone-shaped Nazi bomb shelter.

A kindergarten shaped like a cat with a tail that's a slide.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

The private train station King Leopold II built for the Belgian royal family now lies abandoned.

The spectacular and eerie moss-covered grave site of 19th-century Belgian merchant.

This old, abandoned hotel offers magnificent views.

Abandoned since 1998, this train station has become an oasis for urban explorers.

Take a leisurely walk through the park to find the seven giant troll sculptures hidden throughout the park.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

A little sculpture with a large wardrobe.

A haunting collection of the vanished and disappearing natural world.

A museum of carnival attractions where you are invited to ride the rides.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.