Thermally constant ball laboratories, technical monument, former airport Johannisthal, Wissenschaftsstadt Adlershof Science City, Berlin, Germany, Europe

adlershof airport architecture ball balls berlin building buildings center centers centre centres city constant day daylight daytime during education educational engineering europe european exterior exteriors federal former frg german germany globe globes institute institutes institution institutions johannisthal lab laboratories laboratory labs memorial memorials monument monuments of orb orbs outdoor photo photos policies policy republic research round school schools science science sciences scientific shot shots sphere spheres system technic technical technology the thermally view views wissenschaftsstadt