Mark Reigelman created this unusual installation in the heart of San Francisco that is basically a small cottage or hut attached to the side of an empty building wall. The house includes solar units on the roof to power its night light which turns on at dusk to illuminate the structure. Designboom has some images of it being installed if you want to check it out.

Check out the installation time-lapse below.

And here’s a 24-hour time-lapse of Mark Reigelman’s installation.