2000 World Heritage declaration Historical milestone · la Vall de Boí, Alta Ribagorça, Lleida Image of la Vall de Boí, not of the place itself. UNESCO inscribed the Romanesque churches of the valley on the World Heritage list in the year 2000. The recognition covered a set of some fifteen churches and changed the local economic model, steering it towards cultural tourism. 2000 Photo: Alberto-g-rovi (CC BY 3.0) What to see and do in la Vall de Boí