Architect: James Hubbell Location: Santa Ysabel, CA James Hubbell has been building and adding to his home on a hilltop outside of San Diego, CA for over 30 years. It's clearly inspired by Gaudi (and walking the grounds feels a lot like a mini Park Guell), among other influences. But Hubbell is a master of organic architecture and walking through his estate is a rare treat. It's open to the public every year on Fathers' Day. This compound was almost destroyed in the Cedar Fire of 2003, but has now been almost entirely rebuilt.