▁been ▁week ly ▁demonstr ations ▁on ▁Monday ▁even ings . ▁On ▁ 1 ▁October ▁ 2 0 1 0 , ▁the ▁biggest ▁protest ▁so ▁far ▁took ▁place ▁with ▁an ▁estimated ▁ 1 0 0 , 0 0 0 ▁people ▁taking ▁part ▁in ▁the ▁demonstr ation ▁against ▁the ▁project . ▁ ▁The ▁protest s ▁are ▁organized ▁by , ▁among ▁others , ▁a ▁grass ro ots ▁initi ative , ▁Leben ▁in ▁Stuttgart ▁( Life ▁in ▁Stuttgart ), ▁the ▁local ▁branch ▁of ▁the ▁German ▁Green ▁Party ▁and ▁the ▁environmental ▁organisation ▁Bund ▁für ▁Um welt ▁und ▁Natur schutz ▁Deutschland . ▁They ▁are ▁suggesting ▁a ▁renov ation ▁of ▁the ▁current ▁railway ▁station , ▁including ▁creation ▁of ▁some ▁new ▁rail ways , ▁but ▁respect ing ▁the ▁cultural ▁her itage ▁of ▁the ▁Haupt bahn hof ▁termin us ▁and ▁the ▁natural ▁her itage ▁of ▁the ▁adjacent ▁Schloss g arten ▁( Pal ace ▁Park ). ▁The ▁park ▁( see ▁Old ▁Castle ▁( St utt gart ) ▁and ▁New ▁Castle ▁( St utt gart )) ▁by ▁Nikol aus ▁Friedrich ▁von ▁Th ou ret , ▁is ▁part ▁of ▁a ▁cher ished ▁green ▁space ▁that ▁connect s ▁the ▁inner ▁city ▁with ▁the ▁banks ▁of ▁the ▁Ne ck ar ▁river . ▁During ▁the ▁estimated ▁construction ▁time ▁of ▁at ▁least ▁ 1 0 ▁years , ▁the ▁project ▁would ▁cut ▁off ▁connections ▁to ▁other ▁park ▁areas ▁of ▁the ▁city , ▁known ▁collect ively ▁as ▁the ▁Green ▁U ▁due ▁to ▁their ▁U - sh aped ▁form . ▁In ▁November ▁ 2 0 0 9 , ▁members ▁of ▁the ▁International