In 2006, after a major personal exhibition set up in the city of Florence, he received the nomination of Academic Correspondent of the Class of Sculpture, from the Academy of Florentine Design Arts, founded by Cosimo I dei Medici in 1563. In the long history of Academy also named as Academic Correspondents: Michelangelo Buonarroti, Titian, Tintoretto, Palladio and Galileo Galilei.
From June to November 2009, Deredia creates an important personal exhibition in the city of Rome: 60 sculptures are located in three museums of the city, in the main squares and around the Coliseum. For this occasion, the Roman Forum opens its doors to contemporary art by hosting 10 monumental sculptural complexes by the artist along the Via Sacra.
Since 2003, Deredia has shown his works in outdoor exhibitions in many cities worldwide, from Florence to Rome, from Valencia to Trapani, La Baule in France, Mexico City, Lucca and Genoa in Italy and Miami. During his career, this unique Latin American artist and thinker has carved and cast monumental works in marble and bronze for museums and public spaces in Europe, the United States of America, Asia and Latin America, bringing his message of peace and hope with the most physical of the arts: sculpture.