Louis Sullivan’s dark, swirling cast-iron designs envelop a popular department store in this Chicago landmark.

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

An artificial date palm stands as a memorial to Warsaw's Jewish community.

After the famous composer died in Paris, his sister snuck his heart out of the country to honor his wish that it be buried in their native country.

Hundreds of notes give thanks to the patron saint of lost causes.

Special benches that play Chopin's music are scattered throughout his native city.

The giant statue and its model solar system honor the native Pole who declared that the Earth revolves around the Sun.

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

These 18th-century paintings of Warsaw were used to reconstruct the city after World War II.

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

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

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

The kitsch mansion of the former Romanian president Nicolae Ceaușescu features a golden bathroom.

This sculpture used famed boxer Joe Louis as the inspiration behind its body.

Romania's triumphal arch looks out over Bucharest.

This once-derelict building is now one of the most beautiful bookstores in the world.

This memorial to the victims of the Romanian Revolution of 1989 is often compared to a potato on a skewer.

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

Historic beer hall in Bucharest with magnificent stained glass and a lively folk band.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

The remnants of what was once the longest bridge in the world.

One of the most important fortresses along the Danube now lies in ruins.

A Roman monument to their own civil engineering prowess.

A giant portrait of an ancient king looms over the river.