Macy's plans to set up what it is calling the world's largest shoe floor at its store in New York City. The 63,000-square-foot space will offer more than 300,000 pairs of shoes and including luxury shoe shops and a designer shoe salon. The department store plans will expand the current women's shoe department by 9,000 square feet and are part of an overall renovation of the store. Construction on the main floor has already started.