Wat Si Sawai stands apart from the surrounding ruins as evidence of the Khmer influence that preceded Sukhothai Buddhist culture. The three corn-cob shaped prangs were originally built as a Hindu shrine before being converted to Buddhist use, a religious transition visible in the layered architectural history of the structure itself.

The laterite construction and surrounding moat give the site a heavier, more ancient quality than the lighter Sukhothai-style chedis nearby. Included in the central zone ticket and located close to Wat Mahathat, it rewards a few minutes of attention from anyone interested in how Khmer Hindu architecture was absorbed and repurposed into Thai Buddhist practice.