DH’s cat ladder.
Katt-trappa is Swedish for cat ladder. The site is a picture gallery and a tribute to all of the fantastic cat ladders of the world. It features 331 cat ladders. That is practically one for every day of the year. Some are unbelievable!
Here are a couple of the cat ladders. There are many more at http://katt-trappa.blogspot.com/. There’s even a video of a ladder-climbing cat.