Interesting to find out more about Escher's life, and in his own words. It was also nice to go through his work in chronological order and see how his ideas developed. Unfortunately the main catalogue of his works is all in black and white, with descriptions of what colours they were printed in. There's only a few colour ones within the text at the start. While it was nice to see some pieces I haven't seen before, there are better presented collections of his work. Worth a read though if you are interested in finding out more about Escher himself.