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

This colorful and quirky set of pegasus sculptures celebrate the works of poet Zbigniew Herbert.

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

Complex tile installations designed by a renowned Polish artist in a Warsaw subway.

Krakow's own version of the Hollywood Walk of Fame.

Seven dragon statues—including one that breathes real fire—are scattered throughout the streets of Krakow.

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

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

Legend holds that this knife serves as a chilling reminder of the deadly rivalry between two local builder brothers.

Remnants from a time before electricity.

This street has over a half-dozen names, all at once.

This unique Lady Liberty is one of the only examples of the figure sitting down.

Ukraine's oldest operating pharmacy now offers guests a fascinating walk through apothecary history.

A fortress built to pacify local uprising that had a stint as a Nazi concentration camp before becoming a five-star hotel.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

The first American department store, and home to the largest operating musical instrument in the world.

This elaborate towering structure was once famed for its revolutionary height.

Walk down an otherwise nondescript alley near Washington Square West in South Philly and find yourself in a vivid, immersive mosaic wonderland.

An Irish Memorial commemorating those who perished due to potato blight.

Welcome to the home of the world's largest typewriter company.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

One of the oldest of its kind.

This beloved marketplace mascot poops money and grants good luck.

Huge masonic hall in Philadelphia with lavishly themed rooms.