Trencadís
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Trencadís (Catalan language) is a type of mosaic created from broken tile shards. The technique is also called pique assiette. This mosaic is done thanks to broken pieces of ceramic like tiles and cups, for instance.
Antoni Gaudí was the first to use this technique. He covered his three-dimensional architecture with ceramics of different shapes, reliefs and colours, collected from the factory "Pujol i Bausis" located in Esplugues de Llobregat, which create brightly-colored patterns dancing together under the Mediterranean light.
The Catalan architects Antoni Gaudí and Josep Maria Jujol used trencadís in many projects, among which Barcelona's Parc Güell is probably the most famous.