Pasan, the Chao Phraya River Source Landmark, derives its name from the Thai word “Pasan,” meaning “to unite.” The name reflects the convergence of four major rivers — the Ping, Wang, Yom, and Nan — which merge to form the Chao Phraya River, the lifeline that has sustained Thai civilization, economy, and way of life for centuries.

The Pasan project was initiated through the collaboration of Nakhon Sawan Municipality, the Association of Siamese Architects under Royal Patronage, the Chao Phraya Conservation Club, and local residents. Its objective is to raise awareness and foster appreciation for the Chao Phraya River, while developing its origin into a learning center for history and local culture, as well as a significant tourist attraction for both Nakhon Sawan Province and Thailand.

The building is constructed at the tip of Yom Island, directly facing the confluence of the Ping, Wang, Yom, and Nan Rivers, also known as the Two-Colored River Confluence. Covering an area of over 3 rai, the architecture features flowing, curved lines inspired by the movement of water, with an open, wind-friendly structure. It is designed to coexist harmoniously with nature, even during the flood season, when water reaches the base of the building, creating the illusion that the structure is floating above the river.

Inside, Pasan houses a sacred Guan Yin statue plaza, a historical information center, and multimedia exhibitions that clearly explain the origins of the Chao Phraya River. Surrounding the building are open public plazas and riverside walkways, providing space for relaxation, exercise, and close interaction between people and the river environment.

Pasan is therefore not merely an architectural landmark, but also a symbol of pride for the people of Nakhon Sawan, representing the deep connection between nature, history, and the Chao Phraya River.

• By Private Car: Drive across the bridge from PakNam Pho Market toward Yom Island. Clear directional signs are provided, with spacious parking areas near the site.

• By Ferry Boat: Take a local ferry from Pak Nam Pho Market directly to Pasan Pier. The fare is approximately 20–30 THB, offering an authentic experience of riverside life.

• Best Time to Visit (Golden Hour): 4:30–6:30 PM, when golden sunlight reflects beautifully on the building and river surface.

• 360-Degree Viewpoint: Walk up to the rooftop pathway, designed as a gentle slope, to enjoy a panoramic view of the river confluence.

• Preparation: Daytime temperatures can be hot, so hats or umbrellas are recommended, although the building remains cool and breezy throughout the day.

Admission Fee:

• Free admission (No entrance fee)

Opening Hours:

• Open daily from 6:00 AM to 8:00 PM
  Staying until evening is recommended to enjoy the illuminated lighting display, which transforms the atmosphere with changing colors after sunset.