A scattered trail of street art adds a pop of color to the city's stark structures.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

A red sandstone freestanding monolith rises out of the sea in northern Scotland.

This home on a quiet suburban street is completely covered with vibrant mosaics.

A breathtaking flower tunnel bursts with beautiful golden blossoms.

This Manchester laundromat is hiding something.

This foolish Victorian sea fort was converted to a deluxe hotel.

This beautiful "lagoon" is actually a toxic soup filled with cars, carcasses, and trash. When warnings couldn't stop people from going for a dip, the town dyed it black.

Large-scale contemporary artworks tower over fields and lurk in forests around a Jacobean manor house.

The mystery of this small, brick pond eluded its possibly only investigator until his death.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

A house of bones — but nobody is quite sure to whom they belong.

The oldest inn in England served brew to the crusaders.

England's most notorious suicide spot.

A local tree surgeon has created a whimsical walk full of carved tree stumps near Scotland's Loch Lomond.

Below a historic English market town lies a secret underground city complete with kitchens, laundries, storerooms, and an underground lake.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

At high tide this strange footbridge appears to have no purpose whatsoever.

Western Europe's only representation of a Roman goddess still in its original location sits in an unassuming park.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

This stately estate house features a tower covered in a bright, modern mural.

The monster at the center of the Darwin Center Spirit Collection.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.