Underground monastery and fortress.

Hundreds of intricately carved Armenian stone crosses can be found within this huge cemetery.

Called the "Armenian Stonehenge," this ring of menhirs pierced with holes may be a prehistoric astronomical observatory.

Despite producing just a handful of movies, a brave and lyrical filmmaker has an entire museum dedicated to him.

This medieval manuscript collection has some of the most obscure and ancient texts in the world.

Nestled in a peaceful valley, this Armenian monastery may have been saved from Mongols thanks to the eyes of God.

The world's longest nonstop reversible cable car soars through spectacular scenery to the medieval Tatev Monastery.

This ancient monastery complex was transformed from an island to a peninsula when the lake was partially drained.

A geological oddity topped with a 2,000-year-old pagan temple.

This Armenian monastery was carved out of cliffs and named after the spear used to stab Jesus.

Centuries before the modern seismograph, Armenian monks measured quakes with this tilting pillar.

The oldest housing complex in Riga is a mini timeline of architectural trends.

A black cat protests the City Guild in Riga's Old Town.

This former KGB building is now a museum memorializing the people who suffered during the Soviet regime.

These traffic lights celebrate the 100 year anniversary of the women's suffrage movement in Lithuania.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

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

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

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.

This small group of sand dunes manages to pack in a strange rainbow of colors.

A bright little alley in La Boca is a part of tango history.

Native Australian lizards inhabit this garden celebrating Sydney and its sister city in China.

A special train service transported Sydney's dead from this station to "Necropolis Receiving Houses" at Rookwood Cemetery.