Panduan
Iroha Zaka is a section of National Route 120 that connects Bagaeri in Nikko City, Tochigi Prefecture, to the shores of Lake Chuzenji. Its most striking feature is the series of continuous hairpin curves. The road's name is derived from the fact that it once featured 48 curves, and even today, signboards displaying characters from the traditional Japanese 'Iroha' alphabet are placed at each bend to maintain this heritage. The route is divided into two parts: the 'Dai-ni Iroha Zaka' for ascending the mountain and the 'Dai-ichi Iroha Zaka' for descending, offering a dynamic driving experience that follows the natural contours of the mountain.
While this route once operated as a toll road, it is now a free public road open to all. Utilizing the rich, natural topography of Nikko, this route has been a beloved path for many travelers seeking to reach Lake Chuzenji over many years. The unique system where each curve is assigned a character from the 'Iroha'—the traditional Japanese phonetic alphabet—serves as a charming cultural element that connects the modern road to Japanese history.
The greatest appeal of Iroha Zaka is the ever-changing scenery as you drive. The view differs significantly depending on whether you are ascending or descending the mountain. Along the way, there are well-maintained rest areas and parking lots where you can stop to fully immerse yourself in the surrounding nature. A unique way to enjoy the drive is to look for the character signboards at each curve. The shifting colors of the seasons add a layer of magic to the journey, making every trip feel fresh and spectacular.
Iroha Zaka presents a completely different face depending on the season. In spring, the mountains are draped in vibrant fresh greenery, perfect for feeling the refreshing breeze of early summer. The autumn foliage season is widely considered the most beautiful time to visit; driving through a tunnel of red and yellow leaves is an extraordinary experience. However, because it becomes extremely crowded during the peak foliage season, we highly recommend traveling in the early morning. Additionally, be aware that mist and fog can easily form in this area, which may affect visibility.
The primary activity here is enjoying the scenery via car, bus, or rental vehicle. Driving a rental car is a popular choice as it allows you to set your own pace and stop whenever you wish. If you prefer public transportation, the Tobu Bus service runs frequently, providing smooth access from the Nikko area. Whether you are driving or riding a bus, the experience of watching the majestic Nikko landscape unfold through your window is truly unforgettable.
Once you complete the climb up Iroha Zaka, you will arrive at iconic scenic spots such as Lake Chuzenji and Kegon Falls, which are representative of Nikko's natural beauty. As a vital route to these destinations, the drive itself is an integral part of the journey toward the heart of Nikko's natural environment.
Since most visitors travel by car or bus, wear comfortable clothing suitable for movement. Bringing seasonal clothing, such as a jacket for autumn or winter, is essential. Please note that you may encounter wild Japanese macaques (monkeys) in this area; feeding them is strictly prohibited. While there is some English signage, please follow standard Japanese traffic rules and local etiquette. When using parking lots, it is helpful to have cash ready for any local fees.