3 0 ▁Hudson ▁Y ards ▁( also ▁the ▁North ▁Tower ) ▁is ▁a ▁super - t all ▁mixed ▁use ▁building ▁in ▁the ▁West ▁Side ▁area ▁of ▁Manh attan . ▁Loc ated ▁near ▁Hell ' s ▁K itchen , ▁Ch else a , ▁and ▁the ▁P enn ▁Station ▁area , ▁the ▁building ▁is ▁part ▁of ▁the ▁Hudson ▁Y ards ▁R ede velop ment ▁Project , ▁a ▁plan ▁to ▁re develop ▁the ▁Metropolitan ▁Transport ation ▁Author ity ' s ▁West ▁Side ▁Y ard . ▁Since ▁April ▁ 2 0 1 9 , ▁it ▁has ▁been ▁the ▁third - t all est ▁building ▁in ▁New ▁York ▁City . ▁ ▁The ▁building ▁has ▁a ▁tri angular ▁observation ▁deck ▁j ut ting ▁out ▁from ▁the ▁ 1 0 1 st ▁floor . ▁This ▁observation ▁deck , ▁at ▁ 1 , 1 0 0 ▁feet , ▁opened ▁in ▁March ▁ 2 0 2 0 ▁and ▁is ▁the ▁highest ▁out door ▁observation ▁deck ▁in ▁the ▁Western ▁Hem is phere . ▁( The ▁Empire ▁State ▁Building ' s ▁ 1 0 2 nd ▁floor ▁observation ▁deck , ▁at ▁ 1 , 2 2 4 ▁feet , ▁is ▁en closed .) ▁It ▁offers ▁new ▁sky line ▁views ▁to ▁the ▁south ▁and ▁east ▁of ▁Manh attan , ▁the ▁surrounding ▁bor ough s , ▁and ▁New ▁Jersey . ▁ ▁History ▁ ▁The ▁ground bre aking ▁ceremony ▁took ▁place ▁on ▁December ▁ 4 , ▁ 2 0 1 2 . ▁Early ▁construction ▁work ▁focused ▁on ▁building ▁a ▁platform ▁to ▁cover ▁much ▁of ▁the ▁Eastern ▁Rail