Cap de Sant Antoni closes the northern end of Jávea's bay, a rocky headland with a lighthouse at its tip that can be reached on foot or by bicycle from the Arenal beach. The road climbs through scrubby Mediterranean vegetation — rosemary, pine, and prickly pear — with the bay opening out below and the Montgó massif filling the skyline to the west.
The headland is designated a marine reserve, which means the seabed is genuinely protected and the snorkelling and diving are excellent. From the lighthouse, on clear days, you can see the island of Ibiza roughly 80km to the east across the open Mediterranean. The walk from the Arenal takes about 45 minutes one way and is easy; the lighthouse road is accessible by car for those who prefer to drive.