If you want to visit one or more of the associated sites, and are not visiting the Acropolis, there are individual entry tickets for these six sites, all but the Ancient Agora cost 2â¬ â the agora is 4â¬.f you want to visit one or more of the associated sites, and are not visiting the Acropolis, there are individual entry tickets for these six sites, all but the Ancient Agora cost 2â¬ â the agora is 4â¬.
The online form replaces the onboard paper and customs entry requirements for all passport holders of visa waiver countries. Electronic Travel Authorization (ESTA) application forms became mandatory on January 12, 2009, to reinforce security. All travelers on business or holiday, from countries who previously were beneficiaries of the Visa Waiver Program (VWP) must now apply online and obtain an ESTA before their trip to the United States.
Select Language: There are currently 38 Visa Waiver countries that as of January 12, 2009 require an approved ESTA Travel Authorization to visit the United States via air or sea.Individuals holding a passport from any of these countries may visit the United States under the Visa Waiver Program under certain conditions. A machine readable passport is required for all Visa Waiver travelers. 2  An approved ESTA (U.S. Travel Authorization) is mandatory for all Visa Waiver travelers entering the U.S. by air or sea after January 12, 2009. 3  The U.S. Department of State may add or remove countries from the Visa Waiver Program.