. >> gavin munro is not an ordinary farmer. his trees grow chairs. >> this is the first chair that we did. this is where we did it from four trees joined into what? >> he also grows when, but it takes between five and 10 years to grow one of these organic wonders. >> what this is is a kind of organic 3-d printing. it's almost exactly the same. except it is a little slower and we are using air, water and sunshine as our machines and fuel. >> it is not a new concept. he's using metals originally developed more than 100 years ago by landscape architects to impress members of the elite. each piece is prized at emerald thousand pounds, but that surprise he hopes will come down as the business grows. brent: the stools here are so minimalistic, it would take a week to grow one. now a surprise awaits visitors to the glass pyramid leading into the louvre has disappeared, so to speak. a french artist and photographer has covered the entryway depicting part of the museum that stands behind the pyramid. in just the right perspective, it fa