One of the world's largest collections of medieval religious art.

An impressive monument to Poland's independence.

Come to this Polish museum to take a good, clean look at filth.

This Communist-era residential block is one of the longest residential building in Europe.

Modern art commemorates one of the first military actions of World War II.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

Memorial to the lost dead of Gdansk, whose resting places were destroyed during World War II.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

There are thousands of tributes and memorials to the King, but none quite like this one in a Kraków city park.

Once a giant gingerbread factory, this space now hosts exhibits and workshops on the historic treat.

A national collection of Communist-era musical posters.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

A mysterious structure left behind on the Polish mountainside, sometimes called "Hitler's Stonehenge".

Museum dedicated to "the man who moved the Earth."

A hidden art gallery in an abandoned Warsaw fort.

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

Warsaw's fantastically preserved gasworks...almost.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

What was once one of the country's largest confectionary plants is now an abandoned ruin, but is still pretty sweet.

This landmark of the Chicago silent film industry may not be in the picture business anymore but it still stands proudly.

Chicago was once a major hub of film production, but being silent film you don’t hear much about it.

A lush green oasis in the middle of Chicago.

The world's only known button museum.

A Museum of Holography frozen in 1974.