· Ayutthaya, Central Wang-pla Aquarium Wang-pla (Freshwater Aquarium) is the largest freshwater aquarium in Thailand. Visitors across the Octahedral Skylight, then come to the entrance of the aquarium where a corrodor brings visitors circle around the big kidney-shaped tank to explore the freshwater environment, a variety of freshwater organisms live in Chao Phya River System, the main …