▁Register ▁of ▁Historic ▁Places . ▁ ▁Building ▁ ▁The ▁post ▁office ▁is ▁located ▁on ▁the ▁south ▁side ▁of ▁Main ▁between ▁Front ▁and ▁South ▁streets , ▁across ▁from ▁the ▁Ha ver st raw ▁King ' s ▁D augh ters ▁Public ▁Library . ▁To ▁the ▁east ▁the ▁land ▁s lop es ▁g ently ▁down ▁through ▁a ▁park ▁to ▁the ▁Hudson ▁River ▁a ▁short ▁distance ▁away . ▁H ouses ▁are ▁located ▁to ▁the ▁west ▁and ▁south . ▁ ▁Its ▁square ▁main ▁block ▁is ▁a ▁one - story , ▁five - bay ▁structure ▁of ▁brick ▁in ▁F lem ish ▁bond ▁with ▁an ▁east ▁wing ▁and ▁a ▁slightly ▁project ing ▁pav il ion ▁on ▁the ▁north ▁( front ) ▁elev ation . ▁The ▁flat ▁roof ▁is ▁to pped ▁with ▁a ▁cor nice ▁and ▁par ap et . ▁ ▁Fen estr ation ▁on ▁the ▁front ▁pav il ion ▁consists ▁of ▁three ▁round - arch ed ▁open ings . ▁All ▁are ▁fl ank ed ▁by ▁lim estone ▁Greek ▁Rev ival - in sp ired ▁Cor inth ian ▁pil aster s ▁with ▁a ▁similar ▁ke yst one ▁in ▁the ▁arch . ▁A bove ▁the ▁pil aster s ▁on ▁the ▁fac ade ▁is ▁a ▁fr ie ze ▁with ▁ro set tes ▁at ▁the ▁ends ▁and ▁" UN IT ED ▁ST AT ES ▁POST ▁O FF ICE " ▁in ▁car ved ▁letter ing . ▁ ▁The ▁windows ▁at ▁the ▁sides ▁of ▁the ▁pav il ion ▁have ▁a ▁Federal ▁style ▁car ved ▁gar land ▁l int el , ▁re cess ed ▁panel ▁above ▁and