The uninhabited Peter Island marks the southern entrance to Sweetcake Cove on Brier Island, and Grand Passage between Brier Island and Long Island. It is famous for its octagonal red and white wooden lighthouse, built in 1909 and designated a Heritage Lighthouse in 2021. The island serves as a bird sanctuary owned by the Nova Scotia Bird Society.
The Peter Island Lighthouse is a tapered, wooden, octagonal tower standing 13.4 metres (43.9 feet) in height. Constructed in 1909, it is the 2nd generation lighthouse on the site. The original lightstation was established in 1850.
