Look out over Marsamxett Bay. There are several of these around Malta's fortifications. These look-outs were intended to give the sentries a better view of the surroundings, especially the fortification walls in case enemy miners get close to dig mines where later they would plant explosives and bring down the walls
@jenrobcarr Thanks Jennifer. Actually I took that photo in broad daylight - around 10.00am. But I've just installed Photoshop and was playing around with it so I changed the picture to neon and added the moon which I copied from another pic. Didn't want to say that before in order not to spoil the fun.