Its 75 rooms house the largest collection of works by 19th- and 20th-century Italian artists including Giacomo Balla, Umberto Boccioni, Giorgio de Chirico, Giovanni Fattori, Amedeo Modigliani, Giorgio Morandi, Giacomo Manzù, Alberto Burri, Antonio Canova, Felice Casorati and Lucio Fontana.
Among his activities, he has worked as consultant for UNESCO, the Istituto Luce, Rome’s National Gallery of Modern Arts, was President of the International Scientific Film Association and of the Italian Scientific Film Association, and research director in the field of audiovisuals for the National Research Council (Consiglio Nazionale delle Ricerche), the National Film School (Centro Sperimentale di Cinematografia) and RAI.
Arte | Autodromo Nazionale Monza | Commedia dell'arte | Museo de Arte Moderno | Museo Nacional Centro de Arte Reina Sofía | Arte Johnson | ARTE | Accademia Nazionale di Santa Cecilia | Banca Nazionale del Lavoro | Pro Arte Quartet | Moderna Museet | commedia dell'arte | Arte Povera | Agenzia Nazionale Stampa Associata | Galleria Borghese | Museo de Arte Contemporáneo de Monterrey | Galleria nazionale di Parma | 'Arte' | Accademia Nazionale di Arte Drammatica Silvio D'Amico | Stadio Nazionale PNF | Orchestra dell'Accademia Nazionale di Santa Cecilia | Opera Nazionale Balilla | Museo de Arte Contemporáneo (Santiago, Chile) | Museo de Arte Contemporáneo | Museo de Arte Contemporaneo | Hay's Galleria | Galleria Nazionale dell'Umbria | Galleria Nazionale d'Arte Moderna | Galleria Nazionale d'Arte Antica | Galleria Nazionale d'arte antica |
Furnas’s work has been exhibited widely internationally at galleries and museums such as the Baltic Centre for Contemporary Art in Gateshead in the UK, Kunsthalle Wien in Austria, Museum of Contemporary Art, Chicago, Galleria d’Arte Moderna in Bologna, The Whitney Museum of American Art in New York, and The Royal Academy in London.
In 2002, the Lowe Art Museum in Coral Gables, Miami held an exhibition of Pastiglia Boxes: Hidden Treasures of the Italian Renaissance from the collection of the Galleria Nazionale d'arte antica in Rome, and an 80 page exhibition catalogue was published in English and Italian.