1696. Mariana (Brazil). Date of discovery of the city.

July 16 is the date of discovery of the city of Mariana, in the year of 1696. The city was discovered on the banks of the River Ribeirão do Carmo. Mariana was the first city in the state of Minas Gerais. For 29 years, on 16 July, the state's capital is transferred to Mariana symbolically.

Web: Wikipedia (portuguès)

1967. Palma (Majorca, Balearic Islands, Spain). Official opening of the Polígon de Son Castelló (industrial area)

Web: Book of the streets of Palma (in catalan)