1980
Prepares maquette for A CALL FROM THE MINERET, Jeddah Airport, Saudi Arabia.
Solo Exhibit: Philippine Art Now, Art East/Art West, Hongkong Arts Centre, Hong Kong and at the Fukuoka International Art Exhibition, Fukuoka City, Japan
SPIRAL GLOW purchased by the Fiore Internationale D'Art, Paris, France.
Fully documented on video by the cultural arm of the Federal Republic of Germany and the Goethe House.
Prepares concept for THE BROTHERHOOD OF MEN - Gabbon government in Africa.
1981
Installs environment sculptures: WHIRLWIND, SPATIAL GROWTH, TRIBUTE, HOMAGE, FORTUNE TREE, WINNOWER and LEAPING HORSE in Taikoo Shing Residential Development Complex, Hong Kong
Solo exhibit: Castrillo in the Dragon City, Hongkong Arts Centre, Hong Kong.
Sole Sculpture representative for the Philippine Independence Day Art Exhibition, Tag Arts Saudi, Jeddah, Saudi Arabia.
Achievements cited in the South China Morning Post, and in The Guam Tribune. Featured in the American Broadcasting Corporation's documentary "An Artist with a Cause". New York, USA cover story of The Observer ("Artist of Our Time").
1982
Installs AMERICAN ARCANA San Diego City Park, California.
Visits Japan as a cultural visitor and lecturer upon the invitation of the Japan Foundation.
Achievements cited in the Los Angeles Times. Featured in Journey to Adventure, New York, USA on jewelry commissioned by Cristina Onassis. Cover story of Asia Journal ("Philippine Sculptures in Taikoo Shing, Hongkong").
1983
Installs stained glass window panes at St. Williams Church, and SANVITURES Monument, both in Tumon Bay, Guam.
Joint Exhibit with Japanese Ikebana Master, Ikebana Centre, Tokyo, Japan