At night, this memorial illuminates a ghostly outline of a footbridge that connected two sections of the Warsaw Ghetto.

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

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

This enormous 32-foot painting depicts Poland's greatest medieval battle in glorious detail.

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

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

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

A statue honors the children who fought Nazis in Poland.

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

This biographical museum honors the groundbreaking scientist at her birthplace in Warsaw.

The world’s narrowest house makes for an awkward, four-foot-wide living space.

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.

This ancient structure is widely thought to be the oldest intact pyramid in the world.

This Nigerian nature reserve is home to the longest canopy walkway in Africa.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."