The morbid items in this small and hidden museum are not for the weak stomached.

This unassuming bookstore in the heart of Madrid is one of the oldest in Spain.

Artist Natividad Sánchez wrote a new ending for one of Roman mythology's tragic love stories.

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

A must for film lovers in Madrid and home to the Spanish Film Library's projection space.

Inaugurated three times, this tower offers some of the best views of Madrid.

This uniquely shaped 17th-century structure comes alive in early September.

This 47-story "M" needed 20 years to be completed

Poet Antonio Machado's former residence offers the quintessential Castilian lifestyle of the provincial towns in the early 20th century.

A plaque marks the humble origins of an artistic muse who embodied the ideals of Pre-Raphaelite beauty.

The lantern carried by the infamous Guy Fawkes when he was arrested while attempting to blow the houses of Parliament and the King of England to smithereens

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

One of Oxford's greatest treasures likely belonged to England's legendary King Alfred the Great.

Used as an example in one of the first dictionary entries for "museum" in 1706.

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.

A hidden plaque is the only reminder of the lost palace where two storied English kings were born.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

A letterbox installed specifically for the first editor of the Oxford English Dictionary.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

Hidden in plain sight, this creepy sculpture watches from above.

The spot where three Protestant clergymen were burned at the stake during the reign of "Bloody Mary."

This influential Renaissance-era library was once the haunt of kings and monks.