The Henriquez collection of approximately 15,000 inventoried objects, including 2,800 weapons, 24,000 photographs, 287 diaries comprising 38,000 pages, 12,000 books, 2600 posters and leaflets, 500 prints, 470 geographical and topographical maps, 30 archives, 290 music files, 150 pictures and a film archive (with 250 film documents stored at the Istituto Luce in Rome), was bequeathed to the City of Trieste by his heirs in 1983.
Precisely in conjunction with the 100th anniversary of the outbreak of the Great War, on July 28, 2014, in the redeveloped buildings n. 3 and 4 of the former barracks of the district "Duca delle Puglie" of Via Cumano 22-24, the first segment of the assembly Civic War Museum for peace "Diego de Henriquez" dedicated to the First World War was inaugurated.
The exhibition, divided into sections and also characterised by infographic solutions, photographic enlargements and video stations, accompanies the visitor through the contexts and the highlights of the war, from the attack in Sarajevo to the Armistice of Villa Giusti contextualising at the same time, the multiple, and in some cases unique, exposed materials (guns, revolving vehicles, military equipment and weapons, posters, examples of "trench art" and much more).