This spatial concept of the home was actually based on the traditional spaces of the Jomon, a prehistoric people of Japan, as well as those lived in by ancient Africans and Mongolians. It also works great to encourage people to exist closer to one another.
The building site was sloping, and the designers wanted to leave it as undisturbed as possible, so they tried to avoid large-scale construction and cutting down trees as much as possible. To achieve this they built the rooms on the few remaining flat surfaces of the sloping ground, much like they were sewing them together as one would a tent. The facades are also raised up off the ground a bit, which prevents moisture and snow from getting in and keeps out insects.
Warm air gathers in the tallest peak of the home, which stand at 26 feet. This hot air can then either be let out through the triangular windows, or circulated though the house using fans and vents. The home also features underfloor heating, as well as a built-in fireplace, that can also be thought of as a central hearth.