Some examples of applications of holographic interferometry to structures are presented in this paper. Some of the reconstruction techniques are novel and have not been reported previously, in particular the moire and blink projection methods to be described. The applications are arranged in increasing order of quantitative or interpretive sophistication. The dis-cussion of the actual holographic technique in each instance is very brief, the details being available in the literature. ‘`. . . nothing more can be attempted than to establish the beginning and the direction of an infinitely long road. The pretension of any systematic and definitive completeness would be, at least, a self-illusion. Perfection can here be ob-tained by the individual student only in the subjective sense that he communicates everything he has been able to see." Georg Simmel