The color of the page on the left is the actual color of the paper - I had a hard time getting the lighting on this - it was the best of what I could get.
The pictures on the left page are the steps inside the Arc de Triomphe. The top is looking up and the lower one is looking down.
The opposite page is a photo of the diorama of the Arc inside the Arc. An Arc paradox of sorts.... I guess ;)