Outdoor, Large Pools, Tubs, Shower, Decking Patio, Porch, Deck, Back Yard, Hot Tub Pools, Tubs, Shower, and Wood Patio, Porch, Deck The custom built spa was a must have for the homeowners, and features a concealed solar cover beneath the deck boards. It was raised to offer the dramatic view of downtown San Francisco and the East Bay Hills beyond. The interior of the spa is integral color plaster with a Quartzite slab liner at the water line. The sunken conversation pit lies next to the spa and features radiant tubes imbedded in its cantilevered concrete seat.  Best Photos from Twin Peaks Escape Pad