The Easter Holy Week, "Semana Santa", and the Seville Fair, "La Feria de Abril" (also "Feria de Sevilla") are the two most well-known of Seville's festivals. Seville is internationally renowned for the solemn but beautiful processions during Semana Santa and the colourful and lively fair held two weeks after. Every two years, Seville hosts the Bienal de Flamenco and BIACS the Bienal de Arte Contemporáneo.