Resumen
The VLT Interferometer is since several years in science operations, with new opportunities becoming available every time new facilities are being integrated. Most of these steps are easily visible, but some possibilities arise from simple improvements. I detail the scientific potential of the VLTI, giving an overview about the infrastructure and the modes offered by the instruments. I then examine limitations set on sky accessibility, object flux over the visible and infrared spectrum, or object morphology, followed by a discussion of what information can be extracted from VLTI measurements. I close with an outlook on future improvements to the VLTI.
