Description : A popular tourist attraction in Athens, the changing of the Guard ceremonies take place at the Presidential Mansion and at the Tomb of the Unknown Soldier, which is off Syntagma Square below the Hellenic Parliament. The Evzone's, accompanied by a military band march from their barracks, just behind the Parliament Building, along the Vasilissis Sofias Avenue to the Tomb of the Unknown soldier where a ceremonial change of guards takes place every Sunday at 11:00. Greece.