Having never studied architecture before (except through the lens of structural engineering), I found Wiseman's book an excellent introduction to the American variety. The writing itself is superb--a splendid mix of facts, anecdotes, theories, and opinions--so that even for a novice like myself, everything was understandable and engaging. Although it focuses on the 20th century, there's a nice, compact introduction of the previous 2-3 centuries that lets everyone get up to speed. Particularly interesting were the more contemporary architecture, since, with the exception of, say, MoMa or Bilbao, these buildings aren't in the public eye as much as previous works are. Wiseman is a harsh critic of most architecture from the last 40 years, but his opinions are well-supported and, from my perspective of the pictures displayed in the book, generally spot on.