Kid to adult this stuff always amazes and fascinates me. Forum post of a set of photos detailing Nasa’s preparation of the space shuttle discovery, from booster to payload to shuttle to launch. I will never get over just how enormous these things are or the mind boggling achivement that anyone ever made all this work!
http://bmwsporttouring.com/ubbthreads/showflat.php?Cat=0&Board=UBB11&Number=1016238&page=0&fpart=all