The world's first scanning tunneling microscope, outfitted to do double duty as an atomic force microscope. This machine was invented at IBM Zurich in 1981; its creators won a Nobel Prize in 1986. And yes, it really is one of the coolest pieces of tech in the world.
See that orange round thing in the lower right hand corner? It's an Arizona Iced Tea can. Some things in experimental physics never change. ;)