 Control over molecular motion represents an important objective in modern chemistry. Aromatic azobenzines are excellent candidates as molecular switches since they can exist in two forms, namely the cis, z, and trans, e, isomers, which can interconvert both photochemically and thermally. This transformation induces a molecular movement and a significant geometric change, therefore the azobenzine unit is an excellent candidate to build dynamic molecular devices. We describe selected examples of systems containing an azobenzine moiety and their motions and geometrical changes, caused by external stimuli. This article was authored by Estibalismarino and Maria Ribigorda.