Unusual building appears to be haphazardly built from randomly piled bricks.

You'll find just about anything in this funky Tbilisi flea market.

A lively circle of dancers in the Georgian capital commemorates an ancient rite of spring.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

With over 10,000 lights, this engineering marvel lights up the city after dark.

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.

At this rare mosque in Tbilisi, Sunni and Shia Muslims pray side by side.

This beautiful arched gate is all that remains of the fortress the ancient mountaintop town of Amadiya once was.

'The Letters of Utrecht' lays out a ribbon of poetry one letter at a time, with no final verse in sight.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

The last of Amsterdam's original sea level markers remaining in place.

A poignant museum dedicated to the history of the Dutch resistance against Nazi occupation

Europe's official "zero-level," the equator of elevation.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

This unusual elevator doesn’t stop or slow down.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

100-year-old shipwreck you can walk up to at low tide.

This solo operation offers the world's only whey wines in flavors such as chocolate-orange.

This graveyard is the eternal home of many brave pioneers who settled the Great Northwest.