A highly charged ion facility built around a 14.25 GHz electron cyclotron resonance ion source has been constructed for the experimental investigation of low energy atomic collisions in Tokyo Metropolitan University. Four kinds of different experiments, namely differential scattering of electrons from ions, polarization spectroscopy for charge transfer reactions, Coulomb‐explosion‐imaging of molecular ions, and secondary ion measurements from solid surfaces, are taking place in parallel in this facility. General features of the facility and some recent results are described in this paper.