Na September 25, 1625, ndị Dutch, n'okpuru nduzi nke Boudewijn Hendrick (Balduino Enrico), wakporo San Juan, na-agbachibido Fort San Felipe del Morro na La Fortaleza. Ndị bi gbapụrụ n'obodo ahụ mana ndị Spain, nke Gọvanọ Juan de Haro duziri, nwere ike ịchụpụ ndị agha Dutch site na Fort San Felipe del Morro. Nkwado nke San Juan gara n'ihu; na 1634, Philip IV nke Spain wusiri Fort San Cristóbal ike, yana ebe e wusiri ike isii jikọtara ya na mgbidi sandstone gbara obodo ahụ gburugburu. Na 1702, ndị Bekee wakporo obodo Arecibo, nke dị n'ụsọ oké osimiri ugwu ọdịda anyanwụ nke San Juan, na-enweghị ndị Spain. Na 1797, ndị French kwupụtara agha na United Kingdom. Ndị Britain gbalịrị imeri agwaetiti San Juan, na-agbachibido Fort San Felipe del Morro na La Fortaleza.
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