ISOLDE (Isotope Separator On-Line DEvice) is a radioactive ion beam facility at CERN. ISOLDE provides radioactive ion beams with high intensity and excellent emittance, at a wide range of energies including post-accelerated beams. The beams from ISOLDE are used in a very rich and diverse scientific programme with a focus on the physics of exotic nuclei, but extending to atomic and molecular physics, solid-state physics, material science and medical isotopes. This seminar will provide an introduction to the facility and illustrate some of the physics highlights for non-experts.