Security is tight around the theatre in Belfast where the Queen will meet Martin McGuiness shortly.
As well as an ambulance and police officers on the street police are also visible on the roof of the Lyric Theatre.
In an historic encounter, the Queen has shaken the hand of Sinn Fein's Martin McGuinness.
Today's handshake between the Queen and former IRA commander Martin McGuinness is a historic gesture of peace. Here are some others.
The hands of history? The Queen and former IRA Commander Martin McGuinness will make a remarkable gesture for peace today.