Amenities include the Zoo at Forest Park, which features many exotic animals; the United States' first public swimming pool (1899); numerous playgrounds; an ice-skating rink; a formal rose garden; the 31 acres Porter Lake, which features fishing and paddle-boating; 38 tennis courts; numerous basketball and bocce courts; lawn bowling fields; Victorian promenades and water gardens; dozens of hiking and walking trails; an aquatic park; numerous sculptures; and the Carriage House of Springfielder Everett Hosmer Barney, the man who invented the ice skate and popularized the roller skate during the 19th century.