Carleton College in Northfield, Minnesota, has without doubt the
largest R2-D2 in the world.
The famous astro droid from the Star Wars film is actually a building... in disguise!
And it even seems functional, a window opens!
What you can't achieve with a little imagination and definitely some authorizations too : -)
http://www.youtube.com/watch?v=RTrGOQs4g5M
via gizmodo