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A blend of indoor and outdoor space is a common theme in Southern California homes. But this modern marvel on the market in La Jolla for $3.2 million gives the theme a whole new meaning.

On the home's middle level, "all of the walls fold open," listing agent Elizabeth Courtir says. "It's pretty amazing."

Agreed! We've seen the words "open floor plan" co-opted by folks who wouldn't know a wall from a window, but this home really delivers on the promise of openness. The NanaWall system features glass panels that can be retracted and stored out of sight. This isn't just propping up a window or sliding open a door -- it's making walls disappear.

In minutes, the living space, dining area, and kitchen can transform into a canopied deck and patio with fire pit, if you're so inclined. And with the temperate climate, beach breezes, and panoramic views, you will be.

Architect Sebastian Mariscal built this home in 2006, along with its doppelganger next door. The architect liked the concept so much, he moved into one of the homes, which he wound up selling in 2009. His business partner moved into the other home, which he's now selling.

Their eye-popping design landed the homes on the cover of Dwell magazine in 2009. The publication marveled that the architecture makes vistas "less seen than experienced." You don't have to imagine what it's like to be outside -- you're already there.

The layout includes three en-suite bedrooms on the top level, and a family room downstairs with a screening room, a wine cellar, a bathroom, a guest bedroom, and a garage.

While the main floor is completely open, it's also "very private," Courtir says. The gated residence is the last lot on the street, with no neighbors on one side. The patio space is up a flight of stairs.

The 4,000-square-foot property is not remote, however. It's within walking distance to shops and Windansea Beach.

"To be able to walk down the street to go to the farmer's market or Starbucks, it's a different quality of life," Courtir says.

And then to return to this California-mod retreat will appeal to certain fans of design. "Living in architecture adds something to your life rather than living in a conventional home," she adds.