This puzzle was one of the most fun we have ever done. We had over 12 people working on it throughout the day as grandchildren came and went. We will definitely order "Temples of the US". The pieces actually fit together perfectly when they are in the right place. Great quality. My eyes are 65 years old and I don't see perfectly...but these pieces are NOT too small to see! I give a 5 plus rating. HINT: I drew the finished size on the counter with pencil, which washed off easily after putting it away, which helped us and was fun to do the "inside first", unlike most puzzles we do.