Abelardo Morell teaches photography at the Massachusets College of Art and Design. In order to show his students how a camera obscura works he would turn his class into one. It wasn't long before he started doing it in places other than the class, and taking photographs of the results. He creates the projections by covering the window with thick black plastic and leaving a small hole through which the image sneaks into the room and projects itself, upside down, on the opposite wall. (You can see the covered up window in the mirror of this photograph).
I guess the next step is to create photosensitive wallpaper so you can inmortalise the view from your window inside your room. Forever.
In his more recent work he has started taking color photographs to great effect. Strangely some of these are not upside down.
I'm particularly fond of the two sets of shots below showing the same view at different times of the year.
I'd seen Mr Morell's work some time ago and always meant to post it but never got round to it. You can see the rest of his work on his website. My memory was jolted by today and tomorrow's post on the work of James Nizam, who uses the same technique to create the images from inside abandoned houses: