What’s it like inside the IRS?

I work in a tax office and we ALWAYS wonder what it’s like to work in the IRS.

Do they have offices? Cubicles? Just a room of desks?

Who receives all the faxes?

Are you happy working there?

I know it’s a huge place with many different departments and hierarchical levels but any insight would be awesome. Photos would be the icing on the cake.