With no source of income, most end up living in tent cities with no hot water or electricity. Their young age - some of them are barely 15 - makes them especially vulnerable in already precarious conditions. Most of the young migrants you see in these public squares are Afghan and some are very young. Despite the continuing efforts of numerous NGOs, some young migrants - especially unaccompanied minors - find themselves caught up in illegal trades, including drugs, human trafficking and, most frequently, prostitution. It’s almost impossible for them to find work or decent housing, so they while away their days in public spaces. Town squares and parks in Athens, Greece, are filled with migrants who idle there, trapped in limbo between Turkey and Europe.