Commanding unobstructed panoramas of the Pacific Ocean from its Big Sur hilltop perch of 10 acres, Treebones Resort’s latest is the Autonomous Tent, which resembles a miniature Sydney Opera House and packs a king-size bed, a gas fireplace, and a claw-foot shower into its distinctive structure. You can also choose to sleep in a yurt or even a human-size bird’s nest woven out of wood.