German Chancellor Angela Merkel arrives in Athens
9 October 2012 Last updated at 12:33 BST
German Chancellor Angela Merkel has arrived amid heavy security for her first Greek visit since the eurozone crisis erupted nearly three years ago.
Some 7,000 police officers are on duty, public gatherings are banned in certain areas of the city and protesters were warned to "protect the peace".
The BBC's Kirsty Lang and business reporter Aaron Heslehurst described her visit as "symbolic".