These new units are easily spotted from the Lift Bridge and from the harbour piers, one day there was nothing, the next a new structure. That is how fast they went up.
If see them on a sunny day, the sun light makes a cross which slowly travels up the side to the top, then back down the opposite side.
If see them on a sunny day, the sun light makes a cross which slowly travels up the side to the top, then back down the opposite side.