It took my son and daughter (both engineers) about 9 hours to construct this in my yard for my grandsons. Definitely a job for two or more. My 3 yr old and 6 yr old grandsons love it! As one said, "So you got this so we wouldn't get bored when we come to your house!" I didn't think that was a problem, but I appreciated his candor! The 3 yr old is able to climb the rope, the ladder, and the wall. It's only been up for about 2 months, but so far we've had no complaints. I'm really glad I made this purchase!