Combination design incorporating the standard cubby house along with a front porch verandah, front steps and the addition of a side sand pit which includes 2 flower or veggie garden beds for added fun.
Ultimate Fort Knox playhouse, this design allows for continuously adding on more forts to create any combination of fort numbers. The design plans include details for the bridges between the forts and the drawbridge ramp/steps.
Mega Ultimate Build fortresses for those who really want to go to the full extent. You can build 2 sets of these, with each set of double forts connected with a tunnel that incorporates "spy hole" to spy on the enemy.