I haven't been there in awhile, but I love the LGA Controllers.

We had a scheduled 2+ hour sit at LGA so we went up to the Tower. I have >15K hours and I was AMAZED at what I could learn from these people.

The woman giving us the tour asked if I wanted to join her on freq when she took over Local. I thought, "Not really, I've heard it all, but it seems polite to do so."

She talked to Approach, Landing aircraft, Ground, Departing aircraft, Departure AND me with such ease and grace it astounded me.

It probably makes me a tool, but I would love to go to certain Towers just to observe. MDW, DCA, LAX, LGA (again - for 4 hours this time), TEB would be cool for the mix of aircraft. I haven't been to DFW or ATL enough to know their airport, but those might be cool as well.

I don't know if it would be exciting or frightening to go to PVR, CUN or especially MEX towers. I haven't been overseas, I'm sure they have some fascinating and unique Towers as well...

What do you guys think the best Towers to observe for learning and entertainment would be?