The term 'Giant Tree' can refer to two different species of trees: REDWOOD and SEQUOIA. Redwoods are the tallest trees in the world, reaching heights of up to 379 feet. They are native to the coastal regions of the Pacific Northwest and are known for their reddish-brown bark and deep green needles. Sequoias are the largest trees in the world, with some specimens reaching up to 311 feet tall. They are native to the Sierra Nevada mountain range in California and are known for their thick, fibrous bark and bright green needles. Both species are considered living giants and are among the oldest living organisms on Earth.