Two-Color River View Point

The Two-Color River View Point is at Khong Chiam, in the far east of Ubon Ratchathani, where the Mun River flows into the Mekong. The two carry different sediment, so the Mekong runs brown and the Mun a clearer blue-green — and where they meet you can see a genuine two-tone line in the water, “Maenam Song Si.” It’s free to view, and the contrast is sharpest around April when the water is low.

What you’ll see

This is the easternmost point of Thailand, right on the Laos border, and the confluence is the draw: a wide meeting of two rivers with a visibly different colour on each side. The riverfront in front of the Khong Chiam temple is the classic spot; for a wider panorama, climb the stairs to the platform at Wat Tham Khuha Sawan, which looks out over the whole confluence and across to Laos on the far bank. You can also hire a longtail boat to go out to the colour line itself.

Insider Tip: Come at the end of the dry season, around April, and early in the morning. Low water gives the strongest colour separation, and morning light over the river (and Laos beyond) is the best of the day. After the rains, the difference washes out.

Visiting

It’s free, and the village of Khong Chiam has shops, restaurants, a riverside park and several temples, so it’s an easy half-day. Most people pair it with Pha Taem National Park nearby, which has clifftop Mekong sunrise views and prehistoric rock paintings.

Watch out: The two-tone effect depends on season and recent rain — it can be subtle or nearly absent when both rivers are high and muddy. Set expectations accordingly, and time your visit for the dry months if the colour contrast is the main reason you’re going.

The Two-Color River View Point is at Khong Chiam, Ubon Ratchathani 34220. View on Google Maps.