Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Eighty million natural history specimens call this gargantuan museum home.

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

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

Built by George III to observe the transit of Venus, this Georgian gem is a unique survivor in the Arcadian landscape of Richmond upon Thames.

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

Elaborate tile work in this railway station tells the story of Portugal.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

One Portuguese poet described this cape, the westernmost point in mainland Europe, as "where the land ends and the sea begins."

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

A musical instrument played by the sea.

Bridge that died in war and was resurected.

A number of craters left by fatal mortar strikes have been filled with red resin to remember those lost during the Siege of Sarajevo.

The first mosque in the world to receive electricity.

Oriental bazaar in the heart of Sarajevo.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

This historic timepiece is thought to be the only public clock in the world that keeps lunar time.

A war-torn Olympic relic is being overtaken by graffiti and nature.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

The remains of the last Bosnian fortress to fall to the Ottomans are still standing.

Formerly Yugoslavia's "forbidden island," this sleepy little city still holds the abandoned remains of military strongholds.

The only gulag ever to exist in socialist Yugoslavia.

This narrow fjord-like bay is the largest ria in the Mediterranean Sea.