Engine sheds with yellow

Grabbed on the way to the Escher exhibition at the Dulwich Picture Gallery. I would love to be able to walk round railway places and not have to snatch from a moving train.

I loved seeing all those well-known images as prints, and life-size, and was especially interested to discover what engaged him enough to draw when he was young: the repeating forms of hillside towns, the receding arches in Cordoba, the complex geometric tiles from the Alhambra in Granada... All forms that reappeared later with rwists.