 A team of materials scientists from Penn State, Cornell, and Argonne National Laboratory has, for the first time, visualized the 3D atomic and electron density structure of one of the most complicated, least symmetrical material systems studied to date. This system is a strained 3D perovskite crystal with octahedral tilts in all directions, grown on another equally complex crystal structure. It was visualized by expanding and modifying an uncommon x-ray visualization technique called COBRA (coherent Bragg rod analysis).