Ricardo Calero’s artistic proposals are always characterised by the developement of a concept, as with those outlined in: Espacios del sentir, AUBES 3935 Gallery, Montreal. Ausencias, Calart Gallery, Geneva. Memorias del Olvido, Naviglio Gallery, Milan. Auras del Silencio, Scheffel Gallery, Bad Homburg, Germany. Nada, Provincial Council of Huesca. Luz en la sombra, Joan Prats-Artgràfic Gallery, Barcelona. Diálogos, Raquel Ponce Gallery, Madrid. Disparates, Continuidad de un proyecto inacabado, The Spanish Academy, Rome and the Villa Pisani National Museum, Venice. Posetilosti, The West Bohemian Gallery, Pilsen, Czech Republic. Continuity of an Unfinished Project, The Katzen Arts Center, Washington. Ricardo Calero, Disparates, Montreal University, Canada. Grabado Tiempo, at the Paraninfo exhibition rooms, Zaragoza University.

In the artistic field of action and installation, Calero has participated in projects such as: La Transparence, Georges Pompido Contemporary Art Center, Cajarc, France. De blancos, vacíos y silencios, Fundación Telefónica, Madrid. Blickachsen 3, Skulpturenim Kurpark, Bad Homburg, Germany. Latidos del tiempo, Lonja Palace, Zaragoza and San Telmo Museum, San Sebastian. Neue Kunst in Alten Gärten, Gehrden-Lenthe, Germany. An die Natur, Altana Kultur Foundation, Bad Homburg, Germany. Del Alba, Albarracín, Teruel. Blickachsen 4 Biennial, Skulpturenim, Bad Homburg, Germany. III Contemporary Art Biennial, Fundación ONCE, Madrid. Los pasos, from the house to the museum of Goya, Fuendetodos, Zaragoza. XI International Biennial, Cuenca, Ecuador. Viva International Video Art, Caixa Forum, Madrid. Blickachsen 9, International Biennial, Bad Homburg-Frankfurt, Germany. Sueños en el mar, exhibition rooms of the Provincial Council of Huesca. Alentejo Triennial, Portugal.