A temple to modernity, tucked away amid Barcelona's more well known museums.

A reconstructed medieval gateway that was the magnificent entrance to the capital city dating back to 1037.

What happened to the three lighthouse keepers who vanished from this place remains a mystery over a century later.

This beautiful system of tunnels built into natural rock serves as a centuries old plumbing system.

One of the world's oldest olive trees, thought to be over 2,000 years old.

Real bones which are said to have belonged to a Polish dragon.

This 700-year-old street food market features baby octopus and soy donuts.

Popular tourist destination where witches in dark hats sell dried llama fetuses for good luck.

The townhouse where the "Blood Countess" Elizabeth Báthory started her murderous career.

Bangkok's men with dangerous jobs come here in search of protective talismans.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

A fascinating little museum dedicated to the thousands of chemical substances concealed in our food.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

This silent sentry in the crypt below a large Gothic cathedral is often knee-deep in water.

Time has stopped at the house where Gandhi died.

One of the Leiden's oldest pubs is also the birthplace of the Heineken star.

It's said to be one of the most significant collections of contemporary Chinese art in the world.

Hundreds of mossy stones engraved with bits of philosophy, literature and random musings.

This unassuming museum's slogan translates to “there is a limit of sadness, anxiety has no limits."

An impressive century-old, to-scale topographical map of Guatemala.

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

It's estimated that half of the world's gold was mined from South Africa's "golden arc."

The oldest known university in the world is in Fez, Morocco.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.