My girls received this toy last Christmas as a combined gift from various relatives.  I and my sister in law put it together.  I think that you could put it together by yourself, but it goes much faster with two people.  Once it was put together my girls immediately got on it and started playing for all that it was quite cold outside.  There hasn't been a day since that they haven't wanted to go out there.  Rain or shine they love that toy.  It is one of the best presents they have ever received.  What's even more fun for them is inviting their friends over to play with them.  They currently have the coolest backyard in the entire neighborhood.  My girls are 2 and 4, but we have had children ranging from 18 months to 11 years old on it and they have enjoyed it immensely.  It is extremely sturdy. My girls love to invite my husband(175 lbs.)to come play with them and he has never felt it bend under his weight.  We would highly recommend this toy to anyone interested in it.