As the fanciness of Madison Ave gives way to the endless commerce that is 5th Ave, this stretch of 35th St acts as a sort of mediator between the two worlds. On one side you have a massive foreboding building (home to some press entity which I forgot to take note of) while the other is more reasonable with it's apartments and Starbucks.
Entering the "5th Ave Zone" you're immediately overwhelmed by the crowds and cheap electronics dealers that line this area. In stark contrast to Madison who's only real activity is that of busses (the street ends only 12 blocks south of here).
It might have been the weather, or the large building on the south side of the street, but this whole area strikes me as very gray and impersonal.