Hungarians and Slovaks walk on the Maria

Hungarians and Slovaks walk on the Maria-Valeria bridge over the Danube River between Esztergom in Hungary and Parkany in Slovakia early 21 December 2007 after the last border crossing barrier between Hungary and Slovakia was removed and people celebrate its disappearance. Hungary, former Soviet bloc countries the Czech Republic, Estonia, Latvia, Lithuania, Poland, Slovakia and Slovenia as well as the Mediterranean island of Malta joined 21 December 2007 the European Union's passport-free Schengen zone. AFP PHOTO / BALINT PORNECZI (Photo credit should read BALINT PORNECZY/AFP via Getty Images)