He studied in Barcelona from 1978 until 1983, then moved to Pietrasanta, Italy in 1985 where he worked until 1989. After two years in Paris, he returned to New York and now divides his time between there and Pietrasanta. With over thirty solo shows since 1985, Fonseca's work has been exhibited in major galleries and museums around the world.
Fonseca's abstract paintings are studies in texture, shape and color. Geometric forms float, swell, and peek through layers of paint, creating a harmonic surface. Fonseca compliments his sophisticated color palette with the creamy white he uses throughout his compositions.
Fonseca's work can be found in public and private collections including, the Metropolitan Museum of Modern Art, the Museum of Modern Art, New York; the Whitney Museum of American Art; Smithsonian Institution, Washington DC; IVAM, Valencia, Spain; The United States Embassy, Vienna, Austria.