This desk is really beautiful and I highly recommend it.  I was a little concerned that it may not fit the IMac 27", but it did with ease with room to spare. I have the bottom shelves as well which can fit a tower if need be.  Very good quality.  Would highly recommend this desk to anyone looking for a corner desk option.  It was very easy to put together, but you will need help putting the shelf on as it takes an extra set of hands.