Jordi Bonet i Armengol
as himself, architect
Juan Bassegoda Nonell
as himself, architect
Jean-Yves Chilot
as Antonio Gaudi, voice
Antoni Gaudi
as himself, archive
Daniel Giralt-Miracle
as himself, historien et critique d'art
Luis Gueilburt
as himself, sculpteur et directeur académique de l'atelier Gaudi
Josep C. Laplana
as himself, directeur du musée de Montserrat
Jaume Masso Carballido
as himself, directeur du musée Salvador Viseca
Manuel Medarde
as himself, ingénieur archéologue
Etsuro Sotoo
as himself, sculpteur de la Sagrada Familia
Josep Talada
as himself, chef de l'atelier maquettes
