I have a roof terrace in Roquebrune Cap Martin village, I went on it like I usually do , before super and had some fresh air.this time I observed an unusual very large bright light shaped like a cross with multiple branches.I had the feeling that the light was observing me and was coming closer to me.I stay out for 2 or 3 minutes watching making sure it wasn't a airplane beacon.I rushed back to take my phone to take pictures but when I came back, the light was gone.This is not the first time I saw something, the first time was last year in July and it was something with an unusual shape with a moving light.