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

This extensive collection of vintage Soviet cars is the only one of its kind in the Caucasus.

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

The secret room where early Bolsheviks cranked out propaganda fliers on a smuggled printing press.

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

A tropical paradise just a short trip from the opera house is filled with beautiful winged creatures.

Baroque celebration of the end of the Great Plague of Vienna.

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

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

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

Underground monastery and fortress.

The romance of early commercial flight still fills this Art Deco destination.

The narrowest house in America is seven feet of pure spite.

A former major munitions plant that has been converted into a sprawling art space.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

This pun was simply waiting to come to life, and one defense contractor made it so.

This grand gothic brewery has been pumping out suds for over a hundred years.

A small triangle of DC grass is the final resting place of one of Sonny and Cher's songs.

Stepping away from the glitz of mobsters and casinos to learn about the other history of Vegas.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The tallest The Church of Jesus Christ of Latter-day Saints temple in the world soars above the Beltway.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

A monument marks the location of the first successful steamboat demonstration.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.