Khao Yai National Park is the nation’s largest national park with Nakhon Nayok forming a quarter of the total park area. The park’s dense forests and sprawling high altitude contains a variety of wildlife still in existence in the wild. Several beautiful waterfalls are featured here, including the formidable Heo Narok (Chasm of Hell) which claims at least one elephant death per year since it runs through the wild elephants’ natural jungle path. Great for organized jungle treks.

Dating from the Davaravati Period (6th-13th century), the Dong Lakhon Ancient City is an oval-walled settlement measuring 600 meters at its widest and 700 meters at its longest. Religious artifacts such as Buddha heads, seals and jewelry have been excavated from this site and are now exhibited at the Prachin Buri National Museum.

The Sarika Waterfall is a popular, picturesque 9-tiered fall cascading down a forested hillside.

Another beautiful fall is the Nang Rong Waterfall where water flows over large rocks down multi-levels, with every level containing a pool suitable for swimming.

The extensive botanical garden of privately owned Wang Takhrai’s beautiful landscape is decorated with variety of plants and contains a large stream flowing right through it. Popular activities include riding downstream on inflated tire inner tubes, canoeing, and cycling.

The Phra Chulachomklao Military Academy is a training center for future military officers. Within the vast property are sites of interest opened to the public, such as a museum, a golf course, and a shooting range. They’ve recently initiated a ‘boot camp program’ which allows the public to experience some of the thrilling military exercises.

Phra Phuddachai is a painting etched on a cliff wall near Khao Cha Ngok. The original painting featured a faint Buddha image was retraced to be more visible by the military in 1942. The locals regard this as one of the province’s most sacred sites.

The inside of the city pillar is elaborated decorated with one corner dedicated to Narai, a Hindu god, and another corner to a Buddhist image from the Ayutthaya period.

The Chao Por Khun Dan Shrine is one of the highly respected shrines by the locals. According to legend, he led Nakhon Nayok’s local administration under the Ayutthaya era. In 1587, Khmer invaders conquered the towns of Nakhon Nayok and Prachin Buri. Chao Por Khun Dan mobilized the people and successfully expelled the invaders out.

Because of its proximity to a cemetery for Japanese soldiers from WWII, a memorial dedicated to the soldiers is contained within Wat Phramani grounds.