A sweet symbol marks the place where torturous executions were once carried out.

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

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

This picturesque view of the Scottish Borders was beloved by Sir Walter Scott.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

A 6th-century stone lies at the site of the mythical battle waged between King Arthur and his nemesis Mordred.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

One of the world's largest collections of pathological specimens.

A collection dedicated to the treatment of disease, held in London's oldest hospital.

A strange rock with a sinister reputation lurks within the crimson waters of this Scottish glen.

Scattered throughout London are ancient remnants of the city's former bounding wall.

400-year-old garden, restored to beauty.

The final resting place to 300 Victorian-era pets hides inside the city park.

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

Catacombs turned marketplace.

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

The curios of pharmacist and collector Henry Wellcome.