Skeye was asked to inspect an old chimney in the heart of Rotterdam. The chimney was located on the premises of a car repair garage. The owner rents out the chimney to mobile phone operators so that they can place their antennas and wanted to assess the structural quality of the chimney. Skeye used the Eagle-Eye UAS equipped with a geometrically calibrated 24 Mp camera. This camera not only shows all the required detail but also enables the measurement of damage such as the length of cracks. The inspection will be carried out on a yearly basis to see if cracks are stable or increase in length or width.