The Phromthep Cape is on the southwestern corner of Phuket. It's located to the south of Nai Harn Beach and to the west of Rawai Beach.
Arrived on the car park you have to climb up the steps, then you will see the spectacular view of the Andaman Sea.
There's also an elephant shrine and a lighthouse which you can discover.
Many tourists as well as locals appear there at evening. The reason is that Phromthep Cape is the most popular sunset viewpoint of Phuket.