2 week old stays awake for hours?!

My two week old will keep his self awake for two to three hours at a time. I usually wake him up every two hours to feed and change him, but at least once or twice a day he will stay awake after I change him and feed him for long periods. He doesn't fuss too much. He just seems content staying awake and looking around. Does anyone else's baby do this? Everyone told me newborns sleep all day, but not mine.