How do you say majestic? How about "the General Sherman Tree." This hulking grand dame in California's Sequoia National Park is the largest, by volume, known living single stem tree in the world. This giant sequoia (Sequoiadendron giganteum) is neither the tallest known living tree, nor is it the widest or oldest – but with its height of 275 feet, diameter of 25 feet and estimated bole volume of 52,513 cubic feet, it's the most voluminous. And with a respectable age of 2,300–2,700 years, it is one of the longest-lived of all trees on the planet to boot.