" John Muir in 1902, at around age 64. Library of Congress To conservationists, outdoor enthusiasts, and wildlife lovers, John Muir's name evokes countless connotations. Known as an explorer, farmer, inventor, writer, and more, the Scottish-born naturalist made a lasting impact on the landscape of the United States, and his legacy lives on in all corners of the country. Born on April 21, 1838 in Dunbar, Scotland, Muir immigrated to the U.S. with his family at the age of 11, first settling in Fountain Lake, Wisconsin, and then relocating to Hickory Hill, a farm near the city of Portage, Wisconsin. Muir learned discipline at an early age: His father insisted that he and his younger brother work the family land each day, and as the young Muir explored the surrounding countryside, he developed an affinity for the natural world.