Shopping like mad!
This is, by far, the HUGEST shopping mall I ever seen. Well, some say it's the biggest mall in the US (others say it's the biggest of the East Coast and there is an ever bigger somewhere in West Coast, it seems it depends in you account some stores and cinemas as part of the mall or not... or at least this is what I was told by my colleages)
In any case, apart from byzantine discussions about it's size, it's a shopper's paradise. And it's tax free!
I would never been to the US just for shopping, of course. I'm not a big fan of malls. These are so dull, they look about the same all over the world, for me this one was like the Barcelona's mall "Gran Via 2" on hormones!! :))
But it happens that my company's headquarters are located in Wayne, PA, next to King of Prussia. Every time we have a company meeting the staff from other offices stay at the Hotel Crowne Plaza Valley Forge, just in the mall area. So, as I usually arrive the day before the meeting, I've some time for shopping on these business trips. Not bad.... it keeps me awake despite the jetlag! ;)