This is every cat's dream!
YouTuber Billy Browne created this present for his cat, Rufus:
"He began to resent me due to painful ear drops to fix an infection. I would return from work and he would run from me! Now the ears are better I wanted to do something to show my gratitude for his putting up with my torture. Rufus loves boxes as all cats do so this is what I made for him!"
To see the Making Of video for Rufus's Cat Castle, visit The Daily What!