USA, United States of America, Arizona: Biosphere 2 Ceter of the Columbia University. From 1991 to 1993 3 people tried to live in this artificial world without support from the outside world. Today it is a tourist attraction and conferece center.

1991 1993 america amerika architektur arizona ausflugsziel biosphere bundesstaat ceter columbia corner experiment ferienziel forscher forschung four from glasgebaeude glashaeuser isolationsexperiment konferenzcenter labor laboratory lebensraum oekosystem pyramiden sonora states suedwesten the today tourismus treibhaeuser usa united universitaet university urlaubsziel versuch welt westen wissenschaft wueste zonen abgeschieden abgeschirmt american amerikanisch artificial attraction autark center conferece conference desert destination erproben forschen glaesern holiday kuenstliche live oekologische outside people scientist sience sightseeing southwest support tourism tourist tried vacation west