The Forte dos Reis Magos or Fortaleza dos Reis Magos is a fortress located in the city of Natal in the Brazilian state of Rio Grande do Norte.
The fortress was the first milestone of the city – founded on 25 December 1599 – on the right side of the bar of the Potengi River. It received its name based on the date of commencement of its construction, 6 January 1598, at Epiphany Catholic calendar.
Wikipedia https://en.wikipedia.org/wiki/Forte_dos_Reis_Magos
More information at Fortalezas.org http://fortalezas.org/index.php?ct=fortaleza&id_fortaleza=417
Address Brazil
Coordinates -5°45'22.886" N -35°11'41.571" E