This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

This wildlife trust is dedicated to orphaned elephant rescue and conservation.

Memorial to the 89 children killed during the NATO bombing of Serbia.

A NATO bombing took the lives of 16 civilians in 1999—the ruins remain in the center of Belgrade.

The unusual sculptures are believed to be powerful political symbols.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

This small bronze pyramid marks the center of Belgrade, but some say it is a Masonic symbol.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

A misnamed well, with a deep dark past.

Backwards hour and minute hands and a timing mechanism that fluctuates with the temperature led to this clock tower's local nickname.

Where the lovelorn find a home for their sentimental keepsakes.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

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

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

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

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

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

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

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

View the ancient remains of buildings and the ancient "River of Hades" before hopping on a train.

A menagerie of curiously bred creatures.

Model aircraft soar over 360-degree views of the countryside at the start of England's oldest road.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

Local legend holds that if you can make it up this steep cobblestone stairway without taking a breath, you'll have wish come true.