The project aptly known as bird-apartment by Japanese design studio Nendo is essentially a birdhouse, treehouse, and birdwatching station all in one. The architectural tree fixture was designed for the Ando Momofuku Center, an establishment in Japan's Nagano Prefecture that is focused on boosting environmentally friendly nature activities. There are 78 tiny birdhouses connected to one human-size space that makes up the entire treehouse, making it fit to house one person and dozens of birds at any given time.
The structure, which appears to be one giant treehouse, is actually split from within by a wall, separating the the birds from the people. This allows for a person to peep in on the chirping nesters through tiny poked holes in the dividing wall without disturbing or scaring them away. People are able to reach this birdwatching and resting station by climbing a ladder and entering the space through a giant hole, similar to the birds' proportionally smaller entrances on the opposite end.