Public walks provide an opportunity to stroll this beautifully landscaped park. Look for the more than thirty species of trees. The landscape also includes an 1869 watering trough for horses and dogs as well as two guard houses once used by the Fairmount Park Guard in the early 20th century. Wayside signage provides historical information about the park's many uses through time, including burial ground and gathering place. Within the park is the Tomb of the Unknown Soldier of the American Revolution, designed by architect G. Edwin Brumbaugh in the 1950s. Washington Square is also recognized as a Level One International Arboretum.