Huge redwoods of California - the largest trees in the world and one of the most ancient. These trees can reach heights of 76 meters (25-storey building), and their diameter at the level of human breast reaches 9 meters. General Sherman tree in Sequoia National Park is 1,478 cubic meters, equivalent to 21,800 68-kilogram men! These giants of about 3000 years. The oldest is currently a giant sequoia has an age of 3500 years.