A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

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

The silly symbol for an underground protest group is now scattered around the city.

A striking public sculpture representing the period of martial law in Communist Poland.

The site of the first battle of World War II.

An underground city of salt.

In the midst of a living monument to Soviet social engineering, Polish Catholics built this church by hand.

An artificial hill and apparent calendric structure built in the Early Middle Ages immortalizes a legendary Polish princess.

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

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

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

This man-made mound monument was built out of soil from all across the Polish empire.

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.

The largest collection of death masks in Ukraine.

This Ukranian fortress is one of the best-preserved medieval castles in Europe.

The last planned Soviet city was built for the former residents of Prypiat after the Chornobyl disaster.

Padlocks cover this rickety footbridge with love.

The haunting complex honors the millions of Ukrainians who died in the forced famine under Soviet rule.

This 1000 year old relic-filled cave monastery and UNESCO World Heritage Site also hosts an amazing micro-miniature museum.

An Art Nouveau building covered in animal gargoyles and grotesques.

The deepest metro station in the world.

When you've got to go, you've got to go.