What's located behind the Santiago Bernabeu stadium? (See below)?

Log on to - a href="http://www.realmadrid.com/cs/Satellite/en/1193041512791/Historia/Santiago_Bernabeu.htm" rel="nofollow"http://www.realmadrid.com/cs/Satellite/e…/a - go to Chapter 7 and go to the photo that says "elite stadium". You will see there is something there are a few small building-like things there. What are they?