Tumbleduck's Tremendous Treehouse

You must be outdoors to cast this spell. You conjure a nonmagical oak tree and magical treehouse within range.  The tree is 40 feet tall and has  a 4-foot-diameter trunk, and its branches at the top spread out in a 20-foot radius. 

 You may choose the exterior appearance of the treehouse but the treehouse has two stories and its rope ladder entrance is located at a point of your choosing. The first story of the tree house measures 20-feet long, 10-feet wide, and 10-feet high. This room has bedrolls and linens to accommodate up to 6 humanoids, a table and a fireplace. The second story is 10-feet long, 10-feet wide, and 5-feet high and comes furnished with a writing desk and comfortable chair, a lantern, and a telescope.

The interior of the treehouse is warm and dry, regardless of conditions outside. The furnishings conjured with the treehouse dissipate into smoke if removed from it. At the end of the spell’s duration, all creatures and objects within the treehouse that were not created by the spell appear safely outside on the ground, and all traces of the treehouse and its furnishings disappear but the tree remains standing.

You can cast this spell again while it is active to maintain the tower’s existence for another 24 hours. You can create a permanent treehouse by casting this spell in the same location and with the same configuration every day for one year.