The huge place contains ancient Khmer temple ruins which lies at the western most among the others. Influenced by the Khmer civilization, locals constructed and tried to imitate Bayon style Mahayana Buddhist temples after the reign of the great Khmer king Jayavarman VII around 800 years ago. Although the place is vast, it contains only 2 ruins and 1 little museum. Also, the place was damn hot, despite having many trees. However, the place was clean, tranquil and well maintained. We enjoyed strolling around, taking photos and buying souvenirs (models of Prasat Muang Singh). Even this place can't compare with the famous Angkor Wat, it's still worth a visit for ones who like this kind of architecture. Admission fee was 20 baht for Thai or 100 baht for foreigner (plus 50 baht for car / 30 baht for motor tricycle / 20 baht for motorcycle / 10 baht for bicycle).

Situated along the banks of the River Kwai (Khwae Noi), approximately 40 kilometers (25 mi) from Kanchanaburi Railway station is the ancient ruins of Prasat Muang Sing. Covering one square kilometer, the site was constructed during the reign of King Jayavarman VII, who ruled the Khmer Empire between 1181-1218 A.D. Jayavarman VII is considered to be the most powerful of all the Khmer Kings and was a patron of Mahayana Buddhism. In addition to building magnificent temples, a series of rest-houses and hospitals were constructed to aid weary travelers on their long journeys from the famous city-state of Angkor to the kingdom’s far western territories in present-day Thailand. Constructed in the “Banyon-style”, Prasat Muang Sing, like many of the ancient sites on the ancient Khmer Highway is rather small when compared to the ruins of Angkor Wat or Angkor Thom but for those who have never journeyed to Cambodia, this site offers an excellent introduction to the spectacular architecture of the Khmer empire.