Reuters was given access to the reception centre on condition it did not photographs or use the full names of asylum seekers to protect their identities. More than 750,000 of the 900,000 migrants who have arrived in Europe this year landed in Greece, 60 percent on Lesbos. The so-called "hotspot" is one of five such centres Greece has promised the European Union it will establish on its islands by the end of the year, part of measures to manage the refugee crisis.