Cat tree is one of most important cat furniture. Cats always like to climbing onto a higher location, staying there, thinking or sleeping. Cat tree furniture for cats is a good place for them to climb up to and have a rest, instead of the TV, sofa, head of your bed, top of cabinet, top of refrigerator etc.
Best cat trees have more than one or two stairs that can meet the requirement that if you have 2 and even more cats in your house. Most of them are with the scratch board also, so the cat can also sharpen their claws.