King of Prussia Mall
King of Prussia Mall is the largest mall in America in terms of leasable retail space. Some malls have a bigger foot print, but none have more shopping space.
The mall is huge and has some big names like Louis Vuitton and Lego. They also have a machine that magically measures your body to tell you what clothes will fit, but it didn’t work well.
Update 8/23/2016: We went with Anna, Isaac, and Eliza. The mall was even bigger this time. They had just opened a huge expansion. We checked out some fun stores and had some pizza.