Since it was big it came disassembled however it was very straight forward on how to put it together and seller included a diagram. It’s extremely cute and I got it for when my piggies have floor time. I didn't get the ramp because I figured they would just jump to the top if they wanted. It would be good to use their favorite treats to entice them to get on the top. Plenty of space inside and definitely really good if you have a pair of male guinea pigs. Overall great product!