We weren't allowed to bring phones or cameras since it's a high-security federal facility (we had to go through airport-esque security and everything), but these pictures are from the internet, so we can just pretend.
There are 22 ARTCCs in the USA
Which one do you think is the biggest?
A typical controller workstation with Radar screen, flight strip bay, radio controls, and that stylin' trackball mouse
Controllers work individual sectors of airspace (in the background) while others keep an eye on the "big picture" (foreground)
Anchorage ARTCC from the outside