Here's a brand new design we call the "Franciscan Castle". It's a two story tree house and playhouse combination. This castle tree house is covered in stucco and artificial stamped "stones."
The little ones can enter the lower level play fort by going through the door and tunnel in the log. There's even a "secret storage" area for toys in the lower level club house. The upper story play house can be accessed via a ladder in the log or an external staircase that wraps around the back. The taller turret even features a raised platform for viewing those imaginary "far off" lands!