How did the door open by itself and picture frames move?

Ether your imagination is really wild OR---You have a ghost in your house.This happen a lot in old houses.Go to the local City Hall and find out if there is any history in that house.If you have just moved in you may have disturbed something Or someone.I would put crosses in every room and the next time you encounter this spirit tell them you are not there to harm them and they should leave your house and your family alone.Your only other alternative is to call in a ghost finder or a priest.It may sound like I'm joking but if you know anything about the paranormal you know these things that you say are happening are most likely not in your head.Don't be afraid,just investigate,Or move.Good luck.