An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Love, knishes, and best wishes from this legendary Lower East Side bakery.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

Try not to get slimed in Tribeca.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

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

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

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

A bronze replica of an elm tree that honors the victims that perished in Pawaik Prison.

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

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.

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

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

A 20th-century picture show in 3-D.

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.

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

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Once a path for Jewish funeral processions, this unassuming alleyway is rich in local lore.

Antique frame collection with 2,400 frames.