This listing, on the market for just under $1.7 million in Quilcene, Washington, is perched in the trees high above Dabob Bay. Architect Tom Bosworth called the project his “treehouse,” and designed the home to be practically encased in glass and cedar. Each of the three bedrooms has oversized windows to take advantage of the unique views offered by the surrounding 21 acres of forest. And if your official list of treehouse club members is short, the guest room, decks and patio area are perfect for entertaining guests.