It took forever to build and we couldn't get the cams to pull in the cam bolts as tight as it should've been so there are large spaces between sides and shelving which is annoying but we finally finished it at midnight. But it's pretty solid and VERY heavy which was my main concern since we have a very grabby toddler and likes to climb on anything that he can get on. I don't think there will be any issues with this thing tipping over.