He completed his elementary and high school education in the San Jose School of Asunción and his engineering studies in Buenos Aires where he also graduated as a sculptor at the Escuela Superior de Bellas Artes “ Ernesto de la Cárcova”, coming into contact with artists Libero Badii, Alicia Peñalba, Lucio Fontana and Curatella Manes and learning to value the avant-garde movements of the time.
After the bloody civil war of 1947-1954 in Paraguay, Guggiari's liberal and democratic ideas gained him exile, cultural margination and imprisonment on several occasions, during the thirty-year dictatorship of Alfredo Stroessner.
Some have freedom as the central theme: ”Hungria o Libertad“, which received a special mention in the V Bienal of São Paulo (1959); ”Kennedy”, which obtained the first prize in sculpture in the Salon Esso of Young Artist of Latin America, organized by the OEA (1965): ”Rejas”, inspired in the prisons of the Stronist dictatorship; ”NNUU”, a seven meters structure, which is located at the entrance of the Dachau concentration camp (Germany) and symbolizes the United Nations in a form near the building of the NNUU, with perforations as wounds in two fronts-United Nations as a name, because the violence of the world continues-and as a sign of hope in each hole of the violence, a nest of real pigeons as a murmur of peace (199).
As a homage to the dreams that did not come true, what could not be, he carved “Ara rupi a” about which Livio Abramo said once at the presentation: ”Because of the capacity of adapting is deep artistic sensibility to the spirit of this time, Hermann B. Guggiari has a special place in the plastic art of Paraguay and the continent.
(1980) “Gaviota” (1982) is a sculpture presented in Punta del Este (Uruguay) in a mixed exposition of sculptors of Latin America, in the Playa Brava; it's a protest against the death of the coast birds due to the black ties produced by the petrol pollution.