The most important building of the Wat Rong Khun, the ubosot is an all white building with fragments of reflective glass in the plaster. The very ornate ubosot shows some design elements of classic Northern Thai temples like the three tiered roof and stylized Naga serpents on the bargeboards.
Whereas the murals of many old temples depict scenes from Buddhist stories, the walls of the white temple contain colorful murals that depict modern representations of good and evil, contemporary figures like Batman, Spiderman and Elvis, villains and superheroes from movies and comics and even spaceships.
On the back wall of the ubosot is a golden mural of the Buddha, a few images of the Buddha in front of it.