An ancient and majestic fortress that played an integral role in Portugal's road to independence.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

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

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

A cluttered and astounding collection of antiquities and curiosities.

An unusual round church in London with a Templar past.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.

One of Europe's oldest libraries.

The beloved fantasy novelist is buried near a church containing a whimsical etched glass window full of Narnia favorites.

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

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.

This slice of 1960s Danish modernism does not conform to the Oxford college stereotypes.

The beams of the New College, Oxford dining hall come with an amazing story.

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

The fantastic charm of England's oldest botanical garden has made it a place of writerly inspiration for centuries.

A complicated contraption for telling time by the moon.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

This tree was grafted from the actual tree that led Isaac Newton to ponder the theory of gravity.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.