there´s information about the visitors terrace. Unfortunately this menu-entry is only present in the German-speaking version of this website (menu path: Erlebniswelt - Besucherterasse): open 0900-1800h during winter, 2€, located on level 5 in T3
, includes a museum at the visitors terrace. (use the "Terminal guide" on the website in language EN
A pic taken from there see: HLX New Route: STR-HAJ, With 3.5hrs Delay And Pics (by Ndebele Sep 15 2005 in Trip Reports)
For spotting locations around the perimeter: I´ll leave this to the local guys.
EDIT: Oh, were you asking for things to do APART from spotting ? Sorry, no info ...
[Edited 2005-10-12 08:47:19]
Carpe diem ! Life is too short to waste your time ! Keep in mind, that today is the first day of the rest of your life !