William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

An ancient Scottish rock formation said to be the gravesite of a giant remains ensconced in legend and intrigue.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

360° views of the city plus five floors of optical illusions and hands-on science.

This haunting sculpture was created as a statement on the mechanized warfare of the First World War.

A mysterious shape catches the eye in this 16th-century painting.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.

An architectural oddity hides in plain sight on this iconic London bridge.

The sumptuous ceiling was one of the last things Charles I saw before his execution.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

Ship-sized kinetic sculptural fantasy.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

Eclectic final resting place of the controversial explorer.

Pop culture has helped to keep this iconic British building from being destroyed.

The Columbia Road Flower Market is now open every Sunday, rain or shine.

This beautiful Victorian ironwork masterpiece was built to keep London from smelling like poop.

English antique dealers with a taste for the unusual.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A cluttered and astounding collection of antiquities and curiosities.

Eighty million natural history specimens call this gargantuan museum home.

Hear the quietest sound from across the dome.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.