A beautiful ruin of a 14th-century Plantagenet castle built by a medieval mercenary.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

Thousand-year-old Viking runes adorn an ancient Greek lion at the entrance to the Venetian Arsenal.

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

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

These magnificent city walls rise from the barren sun-baked Spanish plains like something straight out of a fairytale.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Dedicated to preserving the history of free Black communities in Brooklyn and beyond.

The oldest Dutch colonial stone house in New York City is a hidden gem on the border of Brooklyn and Queens.

The famous author's cottage hideaway.

This hidden rooftop garden in downtown London offers a quiet respite from a bustling city.

The first declared National Monument in the United States.

The upstairs reading room is packed with millions of rare books, literary manuscripts, and historical treasures.

This restaurant was removed from the famed sister ship of the Titanic and placed within a hotel.

An ancient octagonal weather station named for the eight Greek gods of wind.

A swath of France so devastated by war it is still forbidden to go there.

This Dutch Colonial home is the oldest remaining farmhouse in Manhattan.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

This palatial spiral staircase was so unusual the name "snail" was given to the noble family who built it.

J.R.R Tolkien, C.S. Lewis, and other "Inklings" met at the Oxford pub to discuss the now legendary fantasy stories they were writing.

Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

The old Route 66 town straddling Texas and New Mexico died along with the Main Street of America.

One of the largest-ever mental hospitals now sits abandoned, surrounded by 25,000 unmarked graves.