This Scottish manor house is a lush relic from the life of a literary great.

The sign at the garden gate reads: "These Plants Can Kill."

This iconic 1,000-year-old medieval castle is a favorite of the film industry, most notably as the location for Hogwarts in Harry Potter.

This communist behemoth is the heaviest building in the world and a legacy of a brutal regime.

This once-derelict building is now one of the most beautiful bookstores in the world.

Op-art architecture designed for happiness.

The final resting place for the remains of 143 Habsburg royalty.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Hamburgers are intensely proud of their tunnel beneath the river.

Model Trains and Much More in Hamburg.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

2300-year-old Roman road connecting the empire.

The yawning maw of this pagan visage is said to bite off the hands of liars.

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

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.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

Behemoth, cannon-like telescope operated by generations of Irish earls.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

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

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

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

This smaller cousin of the Forbidden City has gone from ancestral sacrifice to tourist's whispers.