Check out this awesome GeekWeek blog post with a rundown of actual giant robot statues from around the world -- mostly in Asia (of course). Asians do love their giant robots: Mike Le's Guide To Giant Robot Statues.
I really like the Tetsujin statue above, which stands in the middle of a park in Kobe, Japan. It's my favorite -- unless someone erects a giant, life-sized Voltron statue in Las Vegas. Then that will be my favorite. I want to go to there.