So when we were little my grandfather and all the men built my brother and i a treehouse at our family cottage. Alas, after 15 years of use, it had to come down last summer. ANd the trees just looked bare without it. So this summer my little cousin turned 3 years old and my husband and i decided it was time for a new treehouse for the little guy, because really, what cottage is complete without a tree house? I rest my case. So with a bunch of friends we built a treehouse in 2 days, for less than $200 and Harry (cousin) loves it!
Onto the pics.
The platform after the first day. We used giant 2x6s and lug bolts to attach the beams to the trees so that it is super secure. We ran out of wood. and lug bolts.

The stairs that i made with a friend. After the beams were up, we used 2 x 4s as flooring and small 2 x 2s for the treads and stringers of the stairs.

This is the top of the stairs, we put up a little grab bar for the adults b/c it was kind of hard to get up into.

Adding the final touches to the railings. we put a 1 ft high railing all the way around the perimeter and my hubby (that's him) put a sill on it. THe sign my friend and i painted using a stick ( couldn't find the brushes but i think it looks better than it would with a brush) and then we nailed branches on it for "camo cover".

Artsy shot showing the pail that is pulled up using a pully, the sign and the branches.

The final hurrah shot of my hubby(to the right) and his right hand man and engineer.

That about it. The boys did most of the building but i helped out where i could, and designed it with the hubby.
we didn't get many good shots of the interior because it's kind of hard to photograph in all the trees.
Thanks for looking.