2 0 . ▁The ▁Command ant ' s ▁offices ▁are ▁on ▁the ▁ 4 th ▁floor ▁of ▁Washington ▁Hall ▁over looking ▁the ▁P lain . ▁ ▁On ▁the ▁site ▁of ▁present - day ▁Th ayer ▁Hall , ▁on ▁the ▁lower ▁r ises ▁of ▁the ▁cl iffs ▁along ▁the ▁Hudson , ▁the ▁Old ▁R iding ▁Hall ▁was ▁constructed ▁beginning ▁in ▁ 1 8 5 5 . ▁ ▁The ▁structure ▁was ▁known ▁as ▁the ▁largest ▁e quest rian ▁r iding ▁hall ▁in ▁the ▁US ▁during ▁its ▁day . ▁ ▁This ▁hall ▁stood ▁on ▁the ▁cl iff ▁below ▁the ▁P lain ▁until ▁being ▁demol ished ▁for ▁a ▁new ▁r iding ▁hall ▁in ▁ 1 9 0 8 . ▁ ▁In ▁ 1 8 7 0 , ▁the ▁new ▁a cademy ▁headquarters ▁building ▁was ▁constructed ▁on ▁the ▁site ▁of ▁present - day ▁Taylor ▁Hall . ▁ ▁Me ant ▁to ▁house ▁the ▁Super int endent ▁and ▁other ▁a cademy ▁leadership ▁and ▁staff , ▁this ▁building ▁was ▁too ▁small ▁and ▁in ade qu ate ▁shortly ▁after ▁construction ▁and ▁it ▁was ▁demol ished ▁shortly ▁after ▁ 1 9 0 0 ▁to ▁make ▁way ▁for ▁the ▁construction ▁of ▁Taylor ▁Hall . ▁ ▁A ▁cad et ▁hospital ▁was ▁constructed ▁in ▁ 1 8 8 4 ▁on ▁the ▁site ▁of ▁present - day ▁Lee ▁Bar ra cks . ▁ ▁In ▁ 1 9 2 3 , ▁a ▁new ▁wing ▁of ▁the ▁hospital ▁was ▁built , ▁which ▁now ▁houses ▁the ▁Office ▁of ▁Ad m issions . ▁ ▁The ▁main ▁hospital ▁building ▁was ▁demol ished