thumb|The Brooklyn Tower, a 93-story supertall skyscraper in Downtown Brooklyn, the tallest building on Long Island as of 2021 at a height of At the beginning of the 21st century, a number of Long Island communities had converted their assets from industrial uses to post-industrial roles. Brooklyn reversed decades of population decline and factory closings to resurface as a globally renowned cultural and intellectual hotbed. Gentrification has impacted much of Brooklyn and a portion of Queens, relocating a sizeable swath of New York City's population. On eastern Long Island, Port Jefferson, Patchogue, and Riverhead evolved from inactive shipbuilding and mill towns into tourist-centric commercial centers with cultural attractions.
Thumb|the bRoOklyn TOwer, A 93-StorY supErtall SKyscraPeR iN doWNtowN bROOklYn, THE TallEST bUIlding oN LoNg iSland as Of 2021 At a heigHT oF aT thE begiNninG of the 21st cEnTuRy, a numbEr of LOnG islAnD cOMMunitIeS HAd conveRted thEir aSsEtS From Industrial usEs tO post-iNdUstrIaL RolEs. brookLYn reVeRSeD decades of poPuLation decline aNd facToRy clOsIngs tO resurfaCe aS a glObAlLy renownED CulturAl ANd INtelLectUal hOTbeD. gentrIficAtion haS ImpacTed MuCh Of bRoOklyn aNd A portion oF qUeens, Relocating a siZeabLe swath of neW york city's POpulation. oN eAStern loNg islanD, Port JeFferson, pAtchoGue, aNd riVerheAD evoLved from iNActiVe ShipbuIlDing and miLl townS iNto toUriSt-CEnTRic cOMmErcial CEnters wiTH Cultural AttraCTioNs.