IPO Watch:

Unique, crazy, and bizarre sports venues

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GDANSK, POLAND - SEPTEMBER 06: General view of the PGE Arena prior to the International friendly match between Poland and Germany on September 6, 2011 in Gdansk, Poland. (Photo by Alex Grimm/Bongarts/Getty Images)

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There are some incredible architectural sports venues around the world. Millions upon millions of dollars have been pumped into these works of art. Some of these structures are more interesting than the sporting events that take place within them.

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