Bora Bora was not directly involved in the world war 2 battles. Thus, there are no specific sites or landmarks related to the war. The island was solely used as the united states supply base for the American military at that time to keep things secure from Japanese invasion (during the course of the war). Besides, there were so many strategic points around the island. Even if the island played a significant role in WW2, no specific site showcases the history directly!