The document summarizes information about Barcelona Cathedral and architect Antoni Gaudi. It discusses how the first stone of the Cathedral was laid in 1882 and blessed later that year. It then focuses on Gaudi's work on the Holy Family church, providing details on his education and career, including working on the church from 1883 until his death in 1926. It also briefly mentions a rose window Gaudi designed for the Cathedral that was sculpted in Galicia and returned to Barcelona to be installed.