The reason I'm giving this book 5 stars is because -it's so darned useful-! They reccommended that we buy this for the architecture section of my uni course (I do art history), and it was really worth the 4,40€(!) I payed for it. Almost every technical term mentioned in the course had an entry here, explained in simple language and often with a clear line drawing. If you study art history in germany, buy this.