Muir Woods National Park Service is a National Monument of California. Muir Woods is also part of the Golden Gate National Parks Conservatory. Hiking up hill in the redwood forest left me speechless, partly due to the fact that I was hiking steep terrain, and partially because of the beautiful giant redwood and sequoia trees (which are hundreds of years old) that surrounded me. The tallest tree resides in the Bohemian and Cathedral groves standing at over 252 feet tall. The widest tree is over 14 feet wide. Some redwoods are at least 1,000 years old; most mature trees are 500 to 800 years old. Now you can imagine why I was left speechless.