Treehouse at Swallowtail Studios. Absolutely romantic treehouse resting securely in a huge multi-trunked 110 ft. eucalyptus tree. Spacious deck opens up to a dreamy rural surroundings and bohemian interior gives you a magical experience. In the same property there is a large redwood barn in which The Grateful Dead played a gig back in the 1970s! Located in Petaluma, California.