Located on the bank of the Man River, 83 kilometers from Amphoe Mueang, this large Lao-style pagoda similar to that of Phra That Phanom houses relics of the Lord Buddha. Phra That Si Song Rak is a plaster-covered brick pagoda with a square base of 11 meters on each side. The pagoda itself is 32 meters high. Built in the Ayutthaya period in 1560 as a symbol of camaraderie between Ayutthaya and Si Sattana Khanahut (Vientiane), the place it is worth a visit, especially during the Phi Ta Khon celebration held there every May or June.
Tips for visitors: As the pagoda is built for friendship and peace, red attire and red flowers are prohibited as the color denotes violence.
To get there, take Highway No. 203, turn right at the kilometer 66 marker on to Highway No. 2013 and proceed for another 17 kilometers.