 Also in 1902, the foundation stone of the modern port of Rosario was laid, as works were initiated to clean up the ravine of the Paraná River and to build a new coastal avenue.Lamas also dictated the beginning of the works for the Central Market, and created the first commission that proposed to build a National Flag Memorial.In 1900, the municipal administration dictated regulations that allowed for legal prostitution, mandating the inscription of sex workers in a recording office, with the requirements of being 18 or older, working only in authorized facilities, having two medical examinations per week, and keeping an updated sanitary card with a picture, as well as forbidding public exhibition.