"It is a unique event to show a subject of this kind in an ultra-Catholic and conservative country like Poland," added Jack Lohman, president of the museum's governing council.
More than 200 works of art are featured, including classical Greek vases and sculptures, male nudes from the 19th and 20th centuries, and contemporary art from former Communist countries in Eastern Europe.
A small sign at the entrance warns visitors: "The exhibition could be considered indecent for children and they are only allowed to visit if accompanied by their parents or guardians."
"We are aware that the exhibition will cause controversy but we think that we can advance democracy" in our country, Piotrowski said.
The exhibition runs until September 5.
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More than 200 works of art are featured, including classical Greek vases and sculptures, male nudes from the 19th and 20th centuries, and contemporary art from former Communist countries in Eastern Europe.
A small sign at the entrance warns visitors: "The exhibition could be considered indecent for children and they are only allowed to visit if accompanied by their parents or guardians."
"We are aware that the exhibition will cause controversy but we think that we can advance democracy" in our country, Piotrowski said.
The exhibition runs until September 5.
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