These ancient ruins hide in plain sight next to a dessert shop.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The medieval center of the Islamic world was also once the seat of Saladin's sultanate.

The largest masonic lodge in Cuba.

After the Cuban Revolution, the famous rum company had to leave their swanky headquarters behind.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

A colorful narrow alley in Cuba is full of street art and sculptures made of found objects.

A Cuban artist reclaimed his impoverished neighborhood as a dreamy folk art kingdom.

Finland's oldest astronomical observatory once played a crucial role in seafaring and timekeeping.

This irregularly shaped sea fortress has defended not one but three different sovereign states.

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

Atop this library is one of the most beautiful green spaces in Warsaw.

In the summer, the area around this sculpture transforms into a vibrant concert venue.

A national collection of Communist-era musical posters.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This mysterious but iconic tapered tower appears in many Azeri fairytales and legends.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

A unique museum dedicated to culture and artistry of carpet weaving.

A shrine of fire worship built on top of a natural flame.

When the Soviets destroyed the historic Armenian monastery they somehow left its bell tower intact.

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

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

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