The vast, legendary catacombs hold secrets much stranger than stacked bones.

A 19th-century fortress and collection of artifacts offer a tour of Saudi history.

These towering cliffs jut dramatically from the middle of a barren desert.

An annual two-week festival near the city of Riyadh when Saudis let their hair down.

This giant volcanic crater holds its very own field of salt.

Bangkok celebrated its shifting monarchy with a militaristic homage to democracy.

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

One of the most controversial statues in Romania is an emperor with no clothes.

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

Something's watching you.

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

The sad remains of a monument to martial arts legend and movie star Bruce Lee—in the middle of Balkans.

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

This abandoned airplane hanger is said to have once been a top secret launch facility.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

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 abandoned Olympic skiing facility still bears the scars of the Siege of Sarajevo.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

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

This top-secret nuclear bunker hidden in a Bosnian mountain has been converted to a modern art exhibition space.

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

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

Bridge that died in war and was resurected.

The unusual sculptures are believed to be powerful political symbols.