Their faces are painted and they're wearing Katy Perry wigs. They chant, sing and whistle all game long.

It can only be the fans in the "Box That Rocks."

My first trip inside the Copper Box, the raucous arena that's home of the team handball tournament.

I've heard from everyone it's a must see, and it hasn't disappointed.

Argentina and Sweden were going at it, and the place was rocking. Here's a picture: www.yfrog.com/obor6kyj

— Jon Krawczynski — Twitter http://www.twitter.com/APKrawczynski

___

EDITOR'S NOTE — "Eyes on London" shows you the Olympics through the eyes of Associated Press journalists across the 2012 Olympic city and around the world. Follow them on Twitter where available with the handles listed after each item.