Promthep Cape sits at the far south of the island, about two kilometres beyond Rawai Beach, where the land ends in a headland of rock and grass. Thai families and visitors gather here in the evening, and the viewpoint is widely regarded as Phuket's best-known place for sunset. In front of you lies open sea, with small islands such as Koh Kaeo off the cape, and to one side the curve of Nai Harn Beach.
The cape is also a place of local worship. Beside the Kanchanaphisek Lighthouse, built in 1996 for the 50th anniversary of King Rama IX's accession, stands a shrine to Phra Phrom, the four-faced Brahma, surrounded by hundreds of small elephant statues left by people whose wishes came true. Entry to the viewpoint is free, so the only cost is your time: arrive early and stay for the colours.