Important Military Restriction: Under Vietnamese law, Binh Ba is designated as a sensitive military defense zone; consequently, foreign tourists and non-Vietnamese passport holders are strictly prohibited from visiting the island. For Vietnamese citizens, this beach is physically reached by first taking a boat from Ba Ngoi Port in Cam Ranh to Binh Ba Island's main pier. Because Bai Nha Cu is highly secluded and tucked away behind a rocky mountain ridge, it cannot be reached by a direct walk from the main village. Visitors typically arrive by renting an island motorbike or riding in an electric cart along the scenic, winding mountain road. At the top of the cliff overlooking the beach, there is a designated scooter parking area (costing roughly 10,000 VND to 20,000 VND). From here, you must carefully walk down a steep, winding, and somewhat rocky paved path to step onto the sand. Alternatively, many travelers choose to rent a local glass-bottom boat or canoe to approach the beach directly from the sea.
Often called the most beautiful and pristine spot on Binh Ba Island, Bai Nha Cu is a small, dramatic cove featuring incredibly white sand, smooth black volcanic rocks, and exceptionally clear, turquoise water. What makes this beach highly unique for swimmers and snorkelers is its thriving, shallow coral reef located just meters from the shoreline. The seabed has a gentle slope, but swimmers must be very careful and wear water shoes, as the shallow waters are filled with sharp coral fragments and sea urchins. Because of the shallow reef and the beach's secluded nature, it is highly sheltered from waves and currents, creating very calm, pool-like waters during the dry season. There are no lifeguards, safety buoy lines, or commercial hotels on the sand, preserving its wild charm. However, a few rustic local floating rafts and small shore stalls offer basic freshwater rinsing showers for about 10,000 VND, alongside kayak rentals and fresh local seafood.