Phra Nakhon Khiri, also known as Khao Wang, is a historic hilltop palace and temple complex in Phetchaburi Province. Built during the reign of King Rama IV in the 19th century, the site features a mix of Thai, Western, and Chinese architectural styles.

Visitors can explore royal halls, temples, and a small museum displaying historical artifacts. From the hilltop, panoramic views of Phetchaburi town, surrounding mountains, and the nearby coastline can be enjoyed. Phra Nakhon Khiri is a combination of history, culture, and scenic beauty, making it a must-visit landmark.