Which tree is the biggest and tallest?

Living species of sequoias are some of the biggest and widest trees in the world. The tallest trees are the coast redwoods of California; the tallest is a redwood named Hyperion in Redwood National Park near Eureka, California, measuring over 378 feet (115 meters). The widest ones are the giant sequoias, which have much larger trunks and branches. These trees grow in the Sierra Nevada mountains of Central California at elevations of about 6,500 feet (1,981 meters). The trees have survived for 2,000 or 3,000 years. Some of the largest sequoia trees measure 35 feet (10.6 meters) in diameter and up to 300 feet (91 meters) in height. Their bark can be 4 feet (1.2 meters) thick! Many are found in California's Sequoia National Park. The General Sherman, for example, is one of the tallest giant sequoias in the world, with a height of about 275 feet (85 meters).

A redwood forest can make you dizzy just by looking up. Redwoods are among the tallest trees on the planet and can live for thousands of years.