Really impressed with these.  They are a little like putting together Lincoln Logs.  Everything just slides together with joinery.  My daughter and I assembled 2 of them in 30-45 minutes.  I am looking forward to growing lots of vegetables in these raised gardens.  Only reason for 4 stars, and not 5, is that sometimes the wood pieces are not milled perfectly making them hard to slide in place.  I tapped a small hammer against a putty knife and that worked to coax them into place without marring the cedar wood.  Definitely would recommend!