I pass it every day on the way to work and it was only after I read the Wikipedia article about it that I noticed the figure inside it. I tell myself that it’s not obvious and I’m not extremely unobservant, but deep inside I suspect that I’m lying to myself.
More on the Gormley sculpture here.
https://www.elliottwood.co.uk/projects/quantum-cloud-london
http://www.lusas.com/case/civil/gormley.html