I don't like monitoring the time in my sessions (omg only 10 minutes left), so I quite like the fact that the only clock in my therapists office is on a filing cabinet behind me. I didn't even notice where it was for a long time as my therapist is abnormally good at judging 50 minutes (which often seems long, short, or anywhere in between to me), and she almost always only glances briefly at the clock when there is about 2 minutes of the session left.