Fort de Rocher
Q42535000, Haiti
Fort de Rocher (sometimes called Fort de la Roche or Dovecote) was a seventeenth-century fortress on the Caribbean island of Tortuga, northwest of Haiti. It was built and utilized by buccaneers as the primary defense of the island to prevent encroachment of Spanish forces. The fortress lies in ruin today, with only the foundations remaining.
Fort data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).