New toy for the cats

We are looking to get the cats a new cat tree for the back-porch. Right now they are using the foosball table to climb on and that is getting old fast. All of our animals co-habitat together and they are just fine with it but I think sometimes they need a place where the dogs can not reach so they can lay out in the sun. They have some really cool and elaborate ones on the market, so with so many to choose from the task can be overwhelming.