The Suao cold springs are one of only two locations in the world where such carbonated springs exist, with the other located in Italy.
The bubbles forming in the water are caused by high concentrations of carbon dioxide released from the limestone bedrock.
During the Japanese colonial period, the springs were commercially bottled as a refreshing soda known as 'Ramaid' because of their natural carbonation.
The water is famously clear, tasteless, and odorless, leading locals to historically use it for drinking and brewing tea.
The springs were discovered in 1928 by a Japanese military officer who noticed the refreshing properties of the water while stationed in the area.
Suao Cold Spring Park features rare carbonated cold springs that remain at a constant temperature of approximately 22 degrees Celsius year-round. These springs are unique for being among the few cold springs found globally, formed by groundwater filtering through limestone and absorbing carbon dioxide. The park offers both public outdoor wading pools and private indoor bathing rooms for visitors. The water is rich in minerals, particularly calcium carbonate, which creates a slight effervescent sensation on the skin. Recent renovations have integrated modern landscape architecture, including public foot-soaking areas located at the entrance. The facility is situated within Su'ao Township, tapping into the region's unique geological karst topography.
The stone bridge overlooking the main outdoor public wading pool.
Bring your own towels and soap, as they are not always provided in the public wading areas.
The initial sensation of entering the cold water can be shocking; wait a few minutes for your body temperature to acclimate to the 22-degree water.
Check the water level in the outdoor pools, as it can vary based on maintenance schedules and weather conditions.
Avoid wearing sunscreen or heavy lotions before entering the pools to maintain water purity for other visitors.
Occasionally closed for maintenance or cleaning on specific weekdays; check local notices for seasonal adjustments.
Swimwear and swimming caps are strictly required in the public wading pools; no street clothes allowed in the water.
