The tree fort is the tree house in which Calvin and Hobbes are often seen. This is the location of all meetings of G.R.O.S.S., except for the first meeting which was held in the garage. Calvin has a advantage over Susie up in the fort, (or so he thinks...)

"It'll build character!"
This article is a stub. You can help the The Calvin and Hobbes Wiki by expanding it.

Community content is available under CC-BY-SA unless otherwise noted.