From Lensculture:
Abelardo Morell travels the world and converts full-size rooms (some spare, some ornately rococo) into immense camera obscura devices. He brings the outside in through a tiny pin-hole, and by the alchemy of optics, the outside is projected quite naturally upside down superimposing and hugging the surfaces of everything in the room. Then, he photographs the resulting “installation” with his 8 x 10 view camera and enlarges the prints to mural size.
The effect is dizzying and delightful. And the photographs get better and better as you study them and soak in the exquisite overlapping details.
More here.