Designed to commemorate the founding of the first settlement in Delaware.

World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

These old doors are covered in the signatures of Rehoboth Beach artists dating back to the 1930s.

Once used as a deterrent to drinking alcohol.

A gift from Japan, 17th-century lantern stands among the cherry trees at D.C.'s Tidal Basin.

D.C. once had its own tiny rival to the New York Stock Exchange.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

Outside the Department of Transportation, a collection of artifacts honors the history of how we get around.

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.

One of the largest artillery pieces in the world sits in a Washington D.C. parking lot.

This rudder is one of the few remnants of a shipyard that once operated on the banks of the Potomac River.

Catch a scenic view of Warsaw's Old Town from the top of a centuries-old dumping ground.

The last king of Poland was interred in this church nearly 200 years after his death.

This bell stars in a tragic love tale and is said to make wishes come true.

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

Legend says this is actually a heartbroken prince waiting for his true love's kiss.

A menacing statue of this mythical creature can be seen at the legendary site of the monster's lair.

The Polish capital has had a deep connection to its guardian mermaid for almost a millennium now.

A statue honors the children who fought Nazis in Poland.

Down this Cracovian street resides a plaque with a stark message about the city's air pollution.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

Real bones which are said to have belonged to a Polish dragon.

This grubby wall is said to be one of the Earth's esoteric energy centers.