Anatase TiO2 nanorods with a well-defined h110i texture have been studied using a model-based characterization technique based on a previous modeling framework. Intricate secondary side facets characteristic of tilt angles of 26.5◦ have been indexed and a h112i growth direction of the well-aligned facets is identified. These results have not been accessed experimentally but crucial in understanding the nature of the most abundant facets and their structural properties. We find agreement between our results and indirect experimental measurements. Highly exposed {116} facets are found to be responsible for the excellent electrochemical surface properties in the nanostructured anatase TiO2 thin films.