San Lorenzo has some archeological interest and includes artifacts of Incan and pre-Incan origin. It was used during the Battle of Callao as a burial place; its current under-use by the Peruvian Navy has led, in the first decades of the twenty-first century, to a new de facto status as an unlisted marine bioreserve, being the home to many creatures, notably scallops, seabirds, and sea lions.