▁F alls ▁area . ▁As ▁a ▁result , ▁much ▁of ▁the ▁old ▁Marine ▁Mid land ▁core ▁is ▁split ▁between ▁Key ▁and ▁North west . ▁ ▁In ▁ 2 0 1 3 , ▁H SB C ▁vac ated ▁its ▁office ▁space ▁in ▁what ▁was ▁by ▁now ▁known ▁as ▁One ▁H SB C ▁Center ; ▁its ▁former ▁headquarters ▁was ▁renamed ▁One ▁Sen eca ▁Tower . ▁ ▁Also ▁of ▁note , ▁Marine ▁Mid land ▁had ▁purchased ▁naming ▁rights ▁to ▁the ▁Buff alo ▁sports ▁and ▁entertain ment ▁ven ue ▁constructed ▁in ▁ 1 9 9 6 , ▁the ▁Marine ▁Mid land ▁Arena , ▁home ▁of ▁the ▁Buff alo ▁Sab res . ▁Today , ▁the ▁ven ue ▁is ▁known ▁as ▁the ▁Key B ank ▁Center . ▁ ▁Properties ▁Marine ▁Mid land ▁owned , ▁either ▁wh olly ▁or ▁in ▁part , ▁several ▁prominent ▁properties ▁in ▁Up state ▁New ▁York ▁and ▁New ▁York ▁City , ▁including : ▁ 2 5 0 ▁Park ▁Avenue , ▁in ▁Manh attan ▁Marine ▁Mid land ▁Building , ▁at ▁ 1 4 0 ▁Broadway ▁in ▁Manh attan ▁( ind irect ▁ 2 0 % ▁participation ▁in ▁Harry ▁Hel ms ley ' s ▁interest ), ▁near ▁the ▁World ▁Trade ▁Center . ▁Comple ted ▁in ▁ 1 9 6 7 , ▁this ▁ 5 2 - story , ▁ 6 8 8   ft ▁( 2 0 9 . 7 ▁m ) ▁h ig hr ise ▁provides ▁ 1 . 2 ▁million ▁square ▁feet ▁( 1 1 0 , 0 0 0 ▁m ² ) ▁of ▁office ▁space