Feria de Mayo de Osuna Curiosity · Osuna, Sierra Sur, Seville Image of Osuna, not of the place itself. The fair of Osuna began as a livestock fair by Royal Resolution of Charles IV in 1803 and is today declared of Tourist Interest of Andalusia; the city's Holy Week received the same regional-level declaration in 1999. 1803 (origen de la feria); 1999 (declaración de la Semana Santa) Photo: Anna Maj Michelson from SEVILLA, Spain (CC BY 2.0) What to see and do in Osuna