Microsoft's vs. Valve's digs

I can't stand Microsoft's terrible "Modern" UI, but I'll give them props for having an actual Office Innovation Team that actually thinks about this stuff. (Total side note to the OIT people: Choose a different title, it's virtually impossible to search for it.)

From Pics of MS Building 4:

Contrast the above to this (from here):

Now where do you want to work?

You know, you can tell a lot about a company and its culture by just looking at photos of their offices.