"I purchased this set for my 7 year old son. He loves lego and loves the architecture line. He's a bit advanced in lego for his age. It took him about 3 hours to complete. He really enjoyed building the set and did not require any assistance to build it. I was hoping it would be a bit more challenging for him as it is 16+ but he said it wasn't hard to build. Overall I don't regret the purchase, and he loves this set."