Pet-friendly tree houses are for all the family! Skillfully constructed high up in the branches of a tree, a tree house is a structure typically made of wood that utilizes the shapes of the trunk and the strongest boughs to create a horizontal space in a vertical world. They are occasionally linked by suspended bridges and are often accessed by ladders. Many even have running water and electricity. Artful craftsmanship keeps these rooms in the clouds firm and steady, and the rewards for the climb are peace, tranquility, fresh air, and spectacular views.