En este articulo se propone acentuar la reflexion sobre los valores de la arquitectura del movimiento moderno en Colombia, para, desde la raiz, detener la alteracion y destruccion de la herencia edilicia de gran parte del siglo pasado. Mediante dos investigaciones realizadas en Bogota y en cuatro departamentos circunvecinos, se ilustro, en parte, la dimension de la perdida de las obras y, mas grave aun, de la tradicion moderna. Abstract This article is a reflection about the values of Modern Movement architecture in Colombia, in order to end the transformation and destruction of the architectural heritage built in the greater part of the 20th century. This process is partially illustrated through a couple of research projects carried out in Bogota and in four studies of its adjacent provinces; in which is present the loss of good modern buildings and – what is worse – the loss of the modern tradition.