Apparently there is some discussion of Miller Park in Milwaukee, the Brewers retractable-roof, heretofore baseball-only stadium, being used as an NCAA Basketball tournament site.

According to this Springfield, IL article about U of Illinois's annual basketball games at the United Center.

Marquette would play in the United Center, then Illinois would return the game by playing at Miller Park in Milwaukee, home of the Milwaukee Brewers.

There has never been a basketball game played in that domed baseball stadium, but local officials need to stage one as a dress rehearsal if they are going to bid to become a future NCAA tournament site.
Not really earth-shattering, just thought it was an interesting concept.

Maybe GABP could host NCAA hockey tournament games in March?