Schooled at La Academie de Arts Plasticas at the Universite of Mexico, Dominguez is most recognized for his work on enclosures at the Mexico City Zoo. After immigrating to the U.S. in 1956 at the age of 62, the artist began the work that would define his legacy: children's play sculptures. The City of El Paso, TX commissioned Dominguez to create several concrete sculptures. With the recognition he received from that work, he won commissions in Beverly Hills, CA and Las Vegas, NV. Subsequently, he went on to create active play spaces in several cities and counties with his colorful sculptures integrating climbing and various modes of play.
His last and most well-known works, completed in Southern California with his son Renee, including Atlantis in Garden Grove and La Laguna in San Gabriel, were crowning achievements in a lifelong dedication encouraging imaginative play.