Shiraito Falls — Silk-Thread Waterfall in Forest

Shiraito Falls (白糸の滝, 'White Thread Falls') is a 70-meter-wide curtain waterfall where hundreds of thin streams cascade down a curved rock face, creating the appearance of white silk threads (hence the name). The falls are fed by underground springs from Mount Asama, and the water maintains a constant cool temperature year-round. The waterfall is surrounded by lush forest, with ferns and moss covering the rock walls.

Shiraito Falls is designated a National Place of Scenic Beauty and is one of Karuizawa's most photographed natural sites. A wooden observation platform provides close-up views, and the negative ions from the falling water create a refreshing, almost spa-like atmosphere. In winter, portions of the falls freeze into ice curtains, though the main flow continues year-round. The site is easily accessible and suitable for all ages.