I will discuss resonant micro- and nanophotonic structures that have the potential to enhance light-matter interactions and direct the flow of light. In particular this talk will focus on high quality-factor ring resonators that can be used to tailor the optical response of a system. This is achieved by resonantly coupling the ring resonator’s optical modes to either plasmonic nanoantennas or to a mechanical mode of the structure itself. Our experimental and theoretical results show that controlled interactions between these resonant modes of disparate nature can yield an unusual optical response. In the optomechanical system this unusual response manifests itself as a violation of Lorentz reciprocity for light. During my talk I will discuss this breaking of Lorentz reciprocity and show our recent theoretical and experimental progress on this matter.