Tsubame Onsen was the hidden hot spring of Uesugi Kenshin and healed many military commanders.
The milky white peacefulness quietly bubbles up in the mountains at an altitude of 1,100 meters, where rock swallows grow in clusters.
The spring is said to be a “triple beauty hot spring” and contains three major beauty spring qualities: bicarbonate spring, sulfate spring, and sulfur spring.
The white sulfur spring also has a dilating effect on blood vessels and is good for peripheral circulatory disorders.