Silbo gomero Curiosity · San Sebastián de la Gomera, La Gomera, Santa Cruz de Tenerife A whistled language that transforms the Spanish spoken on the island into whistles audible from several kilometres away, created by the aboriginal Gomerans and adapted to Spanish after the conquest. It has been Intangible Cultural Heritage of Humanity since 30 September 2009 — a list distinct from the World Heritage List — and its teaching has been compulsory in the island's schools since 1999. Patrimonio Cultural Inmaterial de la Humanidad desde el 30 de septiembre de 2009 Photo: Gerd Eichmann (CC BY 4.0) What to see and do in San Sebastián de la Gomera