No, I had to put them there. It still doesn't go anywhere so they don't see a trail yet. The next piece will probably be a wrap-around window perch that'll go just out of sight to the left, so hopefully it'll get use then.
Did they try out the shelves without your help ? I dont know how many times I bought something for my cats and I thought that they would love it but very soon I found out that I was totally wrong. Cat trees to sleep on or in, cat beds, cat toys.......in the end they all prefered my bed, the couch to sleep or for example a cheap cardboard box or even toilet paper to play with :)