A traditional start of summer, Dia de San Juan celebrates Tucson's coming monsoon rainy season.. Highlights include a ceremonial procession and the blessing of an altar; the public is welcome to join in the procession. Activities include a charreada (Mexican rodeo events), performances by mariachi bands and folklorico dancers. Mexican cowboys and trick horse-riders (charros and escaramuzas) perform on horseback. There are games and activities for children and families, and vendors of food and refreshments for sale and free information. The event is staged behind Mercado San Agustin, at the corner of Congress Street and Avenida del Convento, west of downtown Tucson.