A tourist asks at the train ticket booth at the Athens International Airport train station about traveling in to the city, and is told (see printed signs) that all Metro rides are free, by government decree, until further notice. In the leadup to the end of Greece's bailout programme from the 'troika' (30 June 2015) Greek banks were instructed to close until the 5 July referendum and only allow people to withdraw a maximum of 60 euros per day. On 26 June 2015 Greek Prime Minister Alexis Tsipras called a surprise referendum to ask the Greek people whether they would accept further austerity imposed by the 'troika' (the International Monetary Fund, the European Central Bank and the European Commission) - ie a 'yes' vote - or reject further austerity and risk being ejected from the Eurozone - or a 'no' vote. The referendum is to be held on 5 July.