The building that is standing in for 666 Park Avenue is the Upper West Side's Ansonia building at 2109 Broadway between West 73rd and West 74th Street. The gorgeous Beaux-Arts-style structure has made previous appearances on the big screen in Single White Female and Hannah and Her Sisters. But its reality is perhaps more interesting: In the 1970s, it was the home of the Continental Baths bathhouse, where Bette Midler got her start with Barry Manilow as her accompanist. The Continental Baths then became legendary swingers' club Plato's Retreat. Long ago, it was the home of legendary Yankee Babe Ruth who was known to walk down to the barber shop on the first floor wearing nothing but his bathrobe.