In this chapter, we supplement the theoretical results presented earlier with experimental data revealing local phase transitions at dislocations. A substantial body of evidence has been gathered from various scattering experiments conducted near phase transition points. Here, however, we focus on the most significant results. Experimental data can be broadly categorized into that obtained through direct imaging and that derived from indirect methods. Direct imaging includes optical and electron microscopic observations of process zones at dislocations in real three-dimensional space. Indirect methods encompass data from experiments involving the scattering of X-rays, neutrons, electrons, and light. A special category of observations includes measurements of superconductivity at dislocations.