In 1998 he displays his first exhibition in Europe and in 1999 he mounts a studio in Salerno Province , Italy .

From the year 2000, he has been developing an intense plastic, cultural and social activity in Europe, The United States and Argentina . Many institutions with a great deal of prestige, such as the Universitá di Bolonia, Boston University and the Consorzio Interuniversitario Italiano per l'Argentina (CUIA) have endorsed his work.

During a trip to Greece in search for his maternal roots, in 2000, he starts painting with mixed technique on wood, fabric and discarded objects.

Among the symbols he tirelessly works with, both to a small scale and to be sited in public places, the Bee stands out as a sign of cooperation, work, honey and desire.

He starts with a series of abstractions that refer to universes and planetary systems. During this period he also carries out research into the owl as a symbol of attentive look for ancient people, giving way to a prolific work from that perspective.

Between 2001 and 2004 he builds a path of giant sculptures with the aim of linking symbolically three Argentine provinces, and having in mind the idea of federating Argentine art. The highlights of this project are the works La Abeja (The Bee), built with pieces of wreckage from the 1995 explosion of the Military Factory at Río Tercero (Córdoba Province), and the Monumento al Almirante Irizar (Monument to Admiral Irizar), among twenty pieces of work located in public places.

In 2002 he builds an avenue of great size sculptures at the Museo de los Parques de Palermo . These sculptures were made by transforming unused industrial materials, and Marmo worked with economically deprived people with the aim of contributing to their social insertion.

In 2003, the documentary Cartoneros (people who make a living by picking up paper and cardboard from the dumps) is filmed as part of a project encouraged by the chair of Literature at Boston University . Directed by writer Ernesto Livon Grosman, the documentary deals with his work and its links with Argentine social reality, and displays a theory that shows how it is possible to transform crisis into poetry.

From 2003, in the framework of the projects Argentina Esporta and Focal Point of Contemporary Arts at the Universitá di Bolonia 's office in Buenos Aires , his work becomes part of a major project under the global title "Metáfora de Desarrollo con inclusión social a través del arte" ("A metaphor for Development with social inclusion through art"). Thus, many exhibitions are encouraged at Italian, European and Latin American Museums, as well as the project "Arte en las fábricas" ("Art at factories"), several workshops, seminars and meetings with people who play an active role in the productive activity; many itinerant exhibitions are displayed at Federculture and the Instituto Italo-latinoamericano (IILA) in Rome; giant sculptures are placed in different public places: 50 pieces of work of great dimension, such as El Monumento al Trabajo ( Monument to Work ) at the slum area Fuerte Apache; El Obrero Metalúrgico (The Metal Worker), at 9 de Julio Avenue; the fountain Sirena del Río de la Plata (River Plate Mermaid), at Buenos Aires's Recova; the series Los Oficios (The trades), at Buenos Aires's suburbs, moveable giant murals; the work Aterrizaje en el Abasto ( Landing on Abasto Neighborhood ), settled at the entrance of Ciudad Cultural Konex in Buenos Aires City; an avenue of sculptures at the Museo de los Parques de Palermo, built with the help of homeless kids and inhabitants of the Villa 31, a shantytown in downtown Buenos Aires; a park of sculptures at the public school Escuela EGB Nº 9, in the Islands of Tigre District, Buenos Aires, among other works created by the artist.

In 2004, fostered by Universitá di Bolonia, they film the documentary Óxido y Descarte (Rust and Discard) on his work, with the idea of showing a metaphor for industrial development. This documentary was first shown at an Exhibition of Argentine Cinema that took place in Milano during May, 2005, sponsored by the Argentine Consulate in Milano.

Marmo's astistic work as a whole has been declared of "cultural interest" by the governments of Buenos Aires City , the provinces of Córdoba, Buenos Aires , several other local governments, the municipalities of Río Tercero, General Rodríguez, Tigre and Tres de Febrero.

The declaration has also been supported by the Argentine Ministry of Foreign Affairs, Fundación Exportar, Ministero degli Affari Esteri, Ministero dell'Istruzione, dell' Università e della Ricerca, Argentine Culture Secretary, Comune di Roma, Provincia di Roma , Buenos Aires City Government, Buenos Aires Province's Ministry of Employment, Buenos Aires Province Cultural Institute and La Plata City Museum of Fine Arts, Università La Sapienza di Roma I, Facoltà di Architettura "Ludovico Quaroni" and Università di Macerata, as well as by several private companies.

During 2005 and 2006 he carries out intense social work at schools as well as at shelters for the hungry, where he mounts art laboratories.

In October 2006 he opens a Park of Sculptures in Rome with five sculptures, with the support of Universitá di Bolonia, the Roman Comune and the Circolo degli Artisti.

In 2007, he carried out an itinerant exhibition, and offered several workshops for workers in the framework of the project 'Art in factories' in Argentina.
His sculptures have been shown in different public places. "Sun child" (Buenos Aires Province) and "The Worker" and "Lightning King"(Dominican Republic) are among the most prominent.
He was chosen to create the Inclusive Community Prize, granted by La Nacion Foundation, and based on 'The Hugs´ Series.
He was awarded a prize at the International Biennial of Santo Domingo (Dominican Rep.) for his work on Social Inclusion through Art. Four of his sculptures were put on display in public places of the City and another one is exhibited at the Museum of Modern Art. He has also delivered a conference on his project 'Art in factories' to local young artists and other conferences on Art and Social Inclusion in different institutions.

His studio in Buenos Aires has been declared of "cultural interest" by the Municipality. It is located in the District of Tres de Febrero , and it is the same atelier where his father installed himself in 1947, when he arrived to Argentina to settle permanently.

2008 - Make a show of paintings on its series "Look," "Theory of Salvation" and "Hugs" at the Cervantes Institute in Tokyo, sponsored by the Embassy in Argentina and Japan Ministry of Foreign Affairs.
Opens its annual show in Rome, Italy at Circolo Degli Artist.
The book presents Deep Miradas Dr. Marian Moya, based on its social work to work on material on the recording of experiences in various destinations where they combine their work and anthropology in the same project.
Conducts presentations on the integration of art in public places in schools, museums and academic institutions.
The Organization of Ibero-American States and the Foundation The Footballer him to sign an agreement on its touring exhibition which focuses on social figure of the athlete and promote their work through the campaign of non-violence in football stadiums, this series of sculptures and paintings is "Spirit, Heart and Sacrifice"
Officially opened the sculpture "Industrial Partners' entry into the Party of General San Martín Province of Buenos Aires, representing a metaphor for industrial development in the region.
Presents the ministry of labor in the nation in its draft Art factories.

2009 - The "Chess Bicentennial" http://www.alejandromarmo.com.ar/esp/textos-ajedrez.htm a project of social integration through art recovery of public space and environmental care for the Autonomous City of Buenos Aires, in 28 workshops on offer from other destinations in the Coop. Alameda, special schools and municipal and dining neighborhood where neighbors are seeking to recover the waste and transform it into the bicentennial games, chess pieces, this activity is organized in conjunction with the working table of the associated management Parque Avellaneda Doors and the Bicentennial.
The Ministry of Culture together with the Ministry of Labor of the nation states of the national cultural project "Art in the factories where workers are involved in different locations to strengthen the bond of production and imagination.
Presents the sample Spirit, Heart and Slaughter, promoted by the Organization of Iberoamerican States and FAA, runs schools and hospitals.
Second semester, a sample of paintings done in the Circolo Degli Artisti, Rome and donates the entire production of this exposure to the earthquake victims in Abruzzo, Italy
Art Appreciation (JICA Cooperation Agency of Japan), under the auspices of the Argentine Embassy in Tokyo, an audiovisual and photographic record of various destinations where you work-roaming
On the House in Madrid and the Universidad Autonoma de Madrid UAM, presented a workshop, present their experiences and social anthropology through the art factories, in schools and community kitchens are working with the concept of play and imagination as science education for 21.Lo century came with a sample of paint on the eyes and hugs healers.

2010 - Awarded the scholarship for resident artists at the Museum Quarter Vienna, Austria
Exhibits at NOVOMATIC FORUM, Vienna Sponsored by the Embassy of Argentina in Austria.
The show spirit, heart and sacrifice, continues its journey through the interior of Argentina.
Your project Art in factories, with the involvement of workers in works for public spaces outlined in various universities as a means of social integration in the productive sector.
Presentation of the model "Evita, wife of South America
Monuments on the facades of the Ministries of Health and Ministry of Social Development of the Nation. Alejandro Marmo idea ...

2011 - The idea of ??Alejandro Marmo which is installed as artistic intervention Evita icon on the facades of former MOP is recognized by the Presidential Decree 329, 2010 and remains in the National Law on Copyright to File 911668.
In the month of March began assembling the wall made of steel cut. Each of the icons of Evita in the north and south walls of the former MOP consists of 44 modules that were forming the total of each of the works of 31mts of 24 meters which were applied on the enhancement of the procedure edificio.Este called Applied Mural. "
On Labor Day and within the framework of the 15 years of the project ART IN THE FACTORIES, is located in Villa Soladti "El Cristo Obrero Workers."
In the Party of Tigre, Buenos Aires next to a shipyard workers end "The Lighthouse of Equality" to be located in Dique Luján and 'Development Constellation "to Route 27 in that district.
In July and August were opened Evita's murals at the Ministry of Social Action of the Nation and in August the Wall looking north of Avenida 9 de Julio.
In September exhibited his art project in the factories in Spain: Madrid Area Crossing and the College of Argentina in Madrid.
Installed various mural scale replicas of Evita in the Avenida 9 de Julio built with the participation of metalworkers in the framework of the Art Factories.

At present a retrospective Marmo keeps standing at the University of Bologna, based in Buenos Aires.