The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.

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

This Transylvanian church has changed its denomination four times.

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

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

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

Something's watching you.

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

A small town Romanian cemetery filled with darkly humorous gravestones.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

Dynastic Home of the De Piro Family.

This unique building in the main square stands out among the city's typically Baroque architecture.

This stoic bronze soldier stands as a symbol of Russian sacrifice or Soviet oppression, or maybe both.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

Estonia's largest creative city is a vibrant bohemian hub located within a former industrial complex.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

An abandoned saucer-shaped monument in the Bulgarian mountains.

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

This historic cemetery was inaccessible for several years due to dozens of land mines.

Oriental bazaar in the heart of Sarajevo.

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.

Bridge that died in war and was resurected.

This ominous Albanian fortress houses tanks and downed planes as a reminder of their victories over Western imperialism.