We bought this for our 5 & 2 yr old children.   The box is heavy.  Make sure you have an entire day to put it together and you have power tools and you know how to use them.  We had to remake the ladder with the climbing wall and purchase all new screws.  The ones that come with it are junk.  The directions are ridiculous.  I suggest writing a,b,c,etc according to the supply list.  Much easier to grab what you need.  Make sure the ground is level as well.also if I are planning on staying it down, use metal heavy duty spikes instead of the cheap ones.  That being said, my kids are on it almost every day and they love it! There is a weight limit, so larger people like us parents should not sit on it unless you reinforce with more wood.  We didn't put in sand, but we did put dirt in the sandbox part.  But like I said before, it took us 13 hrs. From start to finish to build it.  All day!