Snowflakes are based on six sided hexagonal structure. The interesting fact is depending on the forces of nature that include the temperature, humidity, atmospheric pressure and velocity of the wind the snow flakes exhibit a great variety of variations on the theme of hexagons. The bees construct similar shaped hexagonal pockets to house the honey. What's interesting is the fact that hexagonal shapes take the least amount of beeswax to contain the largest amount of honey. The bees somehow seemed to be programmed to construct a comb.
Soap bubbles seem to demonstrate nature's elegant principles.