135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

A Bronze age settlement on the Greek island of Santorini might have been the inspiration for Plato's Atlantis.

Largest illuminated advertisement sign in the world.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

A sculpture of a beloved local figure, who tipped his top hat to everyone he passed on the streets of Bratislava.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

A silly medieval mural preserved on the side of a Viennese house.

Baroque celebration of the end of the Great Plague of Vienna.

The beautiful baroque library of the Hapsburg empire.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

A permanent woodland refuge in the Carpathian Mountains for European brown bears rescued from abuse and neglect

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

This snug medieval lane is one of the narrowest streets in the world.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

This hauntingly beautiful cemetery outside a medieval citadel is full of winding paths and ivy-covered graves.

This is the birthplace of Vlad the Impaler Vlad III Dracul.

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

Historic beer hall in Bucharest with magnificent stained glass and a lively folk band.

The kitsch mansion of the former Romanian president Nicolae Ceaușescu features a golden bathroom.

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

Romania's triumphal arch looks out over Bucharest.

Use a key to unlock this medieval sewer tunnel.

Switzerland's oldest public observatory is an important part of the Zurich cityscape.