The article is devoted to the memory of the Spitak devastating earthquake. The reasons of mass destruction and numerous fatalities are presented. The comparisons in terms of magnitude and other principal factors with the similar earthquakes worldwide are provided. The buildings and structures most affected and those which withstood the disastrous hit of the Earth`s interior are reflected and briefly described. The main activities proved for avoiding the huge destruction and numerous casualties in the territory of the country are pointed out, in particular, the choice of construction technology and application of advanced techniques and approaches for earthquake resistant structures, etc.