UNESCO on Instagram: "A forest, a crypt and an unfinished dream. Before Gaudí imagined the Sagrada Família, he tested his boldest ideas underground. Hidden beneath the trees of Colònia Güell, the @criptagaudi is where the story began: a mosaic of curves, light, and sacred geometry. As #MONDIACULT will unfold in Barcelona, come explore the first stop in our UNESCO #WorldHeritage Series! #TravelTuesday"