Do you see that little icon up there? made of tiles?
Do you have any idea what it means, who puts them up? There's one in Perth I've wondered about for years.
I always see it when I'm going through the city on the freeway from North to South, just after Parliament House (I took this photo in peak hour last week). It is on the foot bridge that connects the city with King's Park, joining Mount Street with Mount Street over the freeway.
Back in the day, I used to go there a couple of times a week to do Jacob's Ladder, a concrete stair going up the side of Mount Eliza on the boundary of King's Park. Nearly 300 steps of pain, just kidding, the first time it kills you and your not sure you'll make it back down your legs are spasm-ing so much, but if you go back the second time is not as hard and so on. I do miss it a little, summer evenings, the beautiful view, the zen of pushing yourself up and down and up down the stairs, the odd gaggle of football players with their shirts off...
Anyway, back to the space invader looking things, any clues? I've always wondered if they were some sort of secret sign, or secret society or something, like the freemasons. Or just random street art. The one over the freeway is in quite a prominent spot, and from my memory I would say it has been there at least 20 years.