A Challenge of Windows and Doors

A couple months ago, I discovered another blog challenge, A Personal Photo Challenge. I thought it sounded like a great idea as it would be a chance to show off some of my more obscure photos, or to even have an excuse to take obscure photos. If you have been following me at all, though, you know that I have my hands into so many other things, that I don't know what makes me think I can take this on as well. But when the photo challenge for this month posted in August, I though, ah, ha, I got this one. 
The theme is "Windows and Doors". I already had some cool pictures which I thought would work, but that day back in August, when I stopped at the Novitiate near Gresham? Would any other place offer more awesome windows and doors?