Sogetsu is a relatively modern (20th C.) school of Ikebana, which is the traditional Japanese art of flower arrangement. Sogetsu retains the spirit of Ikebana, expressing the essence of something that it is particular to the materials and the moment,  but it can be done by anyone, anywhere, anytime, with any kind of material.  

Most of these pieces are 17 - 20 ft tall.

Smaller, table-top sized sogetsu.

Suspended  pieces that move in a breeze.