I liked the other books in this series, and pre-ordered this one thinking I'd like it too. It's good, but not what I expected. Almost all of the 'projects' tell the child to design something by drawing it. "Imagine and draw an underwater house here". "Here's a brief history of architectural ornamentation, draw your own gargoyle here". "Here's how architects draw floor plans, now draw yours here."
The title led me to believe it would be full of ideas for hands-on projects, of which I only saw one- "build the tallest structure you can with straws and tape". The first few pages suggest items to collect to build things with (cups, screws, boxes) and how to organize them, but has no suggestions or projects on things to make with them. That was odd.
There are a lot of architecture concepts and famous buildings introduced, which is great. But before you buy, know that the 'projects' are almost exclusively drawings, not hands-on creations. I'd recommend it for 7+.