Great Fire 350 was the City of London's commemoration of the 350th anniversary of the Great Fire of London in 1666. 

The artist recreated fire on the dome of St Paul's in waves of colour consistent with flame of increasing temperatures (from dull orange to yellow to blue to brilliant white). 

Flames engulfed the South and East faces of the dome in a 180 degree projection. The work aimed to create a visual 'echo' of the fire that destroyed the previous cathedral building, making way for Wren's masterpiece to rise from the ashes.