Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Waldo Park is a municipal park, located in downtown Salem, Oregon, United States. It is one of the smallest city parks in the world, measuring 12 by 20 feet (3.7 by 6.1 m). The park consists of a giant sequoia (one of the biggest tree species in the world) surrounded by landscaping and marked with a plaque and sign.The park is named for the 19th-century lawyer and Marion County judge William Waldo, who planted the tree on his property in 1872. Waldo later sold his property to the city, under condition that the tree be preserved. In 1936, the tree was made into a city park as a result of activism by the American War Mothers, with the support of prominent Salem citizens.