Nagano

Descending into the “Valley of Hell,” named for the hellish steam rising through the frost-bitten rock, reveals one of nature’s most heartwarming spectacles: Japanese macaques soaking in the hot springs. This high-altitude sanctuary provides an unparalleled, intimate encounter with wild primates who appear entirely unbothered by their human admirers. Winter is the prime season; fresh snow blankets the forest while languid snow monkeys bake in the geothermal pools, creating a surreal contrast against the stark white landscape.

In the steep, forested valleys of Yamanouchi, where steam rises from natural hot springs, a troop of Japanese macaques has made a habit that captivates the world: bathing in onsen. Jigokudani, or ‘Hell’s Valley’, derives its name from the boiling water and steam that seeps from the frozen ground, creating a primordial landscape that feels worlds away from modern Japan. The park offers an unparalleled, intimate wildlife encounter. Watching these expressive primates soak in the hot water, groom their young, or simply stare back with curious, intelligent eyes is a profoundly memorable experience. It’s a raw, authentic slice of nature that feels both ancient and immediate.

Founded in the 7th century, Zenko-ji stands as one of Japan’s most revered Buddhist temples, drawing pilgrims for over 1,400 years with its hidden “Absolute Buddha” statue—an icon so sacred it has never been shown to human eyes. The approach along the lantern-lined Omotesando-dori builds anticipation before you pass through the towering Sanmon Gate, its massive timber frame a masterpiece of Edo-era carpentry. Inside the main hall, darkness envelops you as you trace your fingers along the pitch-black corridor beneath the altar, searching for the “Key to Paradise” embedded in the wall—a tactile ritual promising salvation to those who find it. The temple transcends sectarian boundaries, embodying a uniquely Japanese inclusivity where faith, history, and human longing converge beneath centuries of incense smoke.

Five shrines strung like prayer beads along a cedar-lined pilgrimage path — this is Togakushi, where Shinto’s ancient mountain worship meets ninja legend. The approach to Okusha (Upper Shrine) unfurls beneath a cathedral of 400-year-old sugi, their trunks soaring 30 meters straight as arrows. Sunlight filters through the canopy in shafts, illuminating the mossy stone lanterns that have guided ascetics since the Heian period. At the terminus, Okusha’s thatched honden nestles against a sheer cliff face, enshrining the deity who tore the cave door from Amaterasu’s hiding place — bringing light back to the world. The middle shrines (Chusha, Hokosha) cluster near the entrance, their vermilion torii reflected in a mirror pond. Nearby, the Togakure Ninpo Museum and Kids Ninja Village reveal the shadow arts practiced by the Togakure-ryu school, founded by a warrior-monk who trained in these very forests.