The first modern city plan consisted of a triangle defined by the Acropolis, the ancient cemetery of Kerameikos and the new palace of the Bavarian king (now housing the Greek Parliament), so as to highlight the continuity between modern and ancient Athens. Neoclassicism, the international style of this epoch, was the architectural style through which Bavarian, French and Greek architects such as Hansen, Klenze, Boulanger or Kaftantzoglou designed the first important public buildings of the new capital. In 1896, Athens hosted the first modern Olympic Games. During the 1920s a number of Greek refugees, expelled from Asia Minor after the Greco-Turkish War and Population exchange between Greece and Turkey, swelled Athens's population; nevertheless it was mostly after World War II and the Civil War ended, during the 1950s and 1960s, that the population of the city exploded, and Athens experienced its greatest expansion.
ThE fIrst mOdern city plAn cOnsIsTed Of a trIAngLe DeFined by thE aCropOlIS, the ancieNT CEmeterY of keraMeIkos and The neW PAlaCe Of ThE bAvarian kiNg (NoW hoUsing the greEK PArliAmENt), So aS To HiGhliGHT THE COntiNUIty BetWEEn modern AnD ancIent atHeNS. neoclAsSicISm, tHe iNternaTioNaL STyle Of this epocH, WAs tHE ArcHItectUral style througH whiCH BAvAriAn, fRENch aND GreeK ArchiTECts sUcH aS hAnSeN, kleNZe, BoulanGer or kAfTAntZoGloU dEsiGNED The first imPOrtAnT Public bUildiNgs Of tHe New Capital. iN 1896, AtHens hOsTed The firsT moderN olympic gaMes. durinG tHe 1920s a nUmBer Of greek refugEes, expeLLed fROm Asia minor aftEr tHe greco-tURkiSh WAr and PoPUlaTion EXcHaNge BetWeen greece and turKEy, sWelleD athEnS'S population; neveRtheless it wAS mostLy aFTeR WoRld war Ii AND tHE ciViL War ended, duRiNG the 1950s And 1960s, thaT The popuLation of the ciTY expLoDEd, and athens EXpErienced iTS gREaTesT expansIOn.