A while back (I am way behind in my photos) I toured the former Missouri State Penn. Old historic places such as the state penn are a gold mine for photographers and some of them are open to tours and will schedule private tours as well.
So if you find yourself bored with your photography routine, shake things up by visiting a local site. It's usually dark inside, so you will want to bring a tripod at the minimum. Flashes or lights can also be very helpful. Looks for unique angles, shadows, light, and try to capture the mood of the building and it's past history.