Marc Kuhn explains to the public in EL CASTILLO a very international & impressive work of Col-Art, concieved by him and realized in 2010 in Mexico (Jorge Roy Sobrino, Merida, German Venegas, Mexico City, Rossana Duran, Cuernavaca, Juan Ezcordia, San Miguel de Allende), in the USA ( Tammie Allen, Albuquerque, Arnold Wechsler & Liliane Perez, New York ), in Canada ( Nancy Joy Wilson, Toronto), in Spain (Conrado Diaz Ruiz, Adeje, Omar Yamil, Los Cristianos) and Switzerland (M.K.).