The image below was created for Russian jewellery company Adamas. It was used on professional exhibitions, where production of Adamas was represented. You can see several impossible constructions in this image. One of them was derived from Escher's waterfall, and others are impossible stairs.
Artist's web site http://www.alhontess.com.
The original image is very large, so small details are not clearly visible. Below, you can see several zoomed fragments of the source image, where impossible contructions are visible.
Images were found at http://www.alhontess.com/adamas.html.