Nuclear magnetic resonance (NMR) spectroscopy has emerged in recent years as a powerful method for the determination of three dimensional structures of small proteins in solution. Major cornerstones towards these advances were the introduction of two dimensional NMR experiments in combination with high field superconducting magnets, as well as the development of computational procedures to convert NMR derived distances into a 3D structure. This article outlines the methodology employed and illustrates its applicability based on a variety of examples.