Kiso-Fukushima & Fukushima-juku: A Beautiful Historic Post Town in Japan

Located near the geographic center of Japan, Fukushima-juku in Nagano Prefecture is a historic town that flourished as a key post town on the Nakasendo during the Edo period (1603–1868). As the site of the Fukushima Checkpoint, one of the four major checkpoints of the era, it served as a critical transportation hub in Japan at the time. Even today, the town retains strong traces of its 400-year-old Edo-period atmosphere, making it a valuable destination for experiencing traditional Japanese culture and history in depth.

It's a wonderful spot for strolling through old townscapes and enjoying easy hikes, and with good access to the famous Nakasendo post towns of Tsumago-juku and Magome-juku, it also makes an excellent base for Nakasendo trekking.

Located roughly at the midpoint of the Nakasendo, Fukushima-juku was an important rest stop for travelers journeying between Edo and Kyoto. Home to the Fukushima Checkpoint, one of the four major checkpoints, and designated as tenryo—land placed under the shogunate's direct control to manage abundant forest resources such as Kiso cypress—it flourished as the political, economic, and transportation center of the Kiso Valley.

To understand Fukushima-juku, it helps to first know about the Nakasendo. One of the five major highways developed during the Edo period, the Nakasendo was an approximately 540-kilometer route connecting present-day Tokyo and Kyoto. Along this highway, 69 post towns were established, offering travelers lodging, meals, and horse-exchange services.

As a post town on the Nakasendo and the gateway to the Kiso Valley, Fukushima-juku held an extremely important position. It was designated as tenryo—land under the direct rule of the Edo shogunate—serving as a base for managing the abundant forest resources of the Kiso River basin.

The most distinctive feature of Fukushima-juku was the presence of the **Fukushima Checkpoint**. This checkpoint was a crucial inspection station enforcing the Edo shogunate's policy known as "iri-deppo ni de-onna" (guns coming in, women going out).

• Iri-deppo (guns coming in): Prevented weapons from being brought into Edo

• De-onna (women going out): Prevented the wives of daimyo residing in Edo from returning to their home provinces (part of the hostage policy)

Thanks to this strict inspection system, the Fukushima Checkpoint, alongside the Hakone Checkpoint, played a vital role in the security of the Edo shogunate.

Here, we'll introduce the sightseeing spots in Kiso-Fukushima that we especially recommend for tourists visiting Japan from abroad.

The first spot I'd recommend is the "Uwanodan District" in Kiso-Fukushima. This valuable area preserves the original Edo-period street layout and building arrangement just as it was. The cobblestone road lined with traditional buildings on both sides makes you feel as though you've stepped back 400 years into Japan's samurai era.

It's within walking distance of the station, making it a great spot for anyone who wants to see an old Japanese townscape. There are also cafes and bars nearby, so be sure to stop by while you stroll around.

Next, I'd recommend the Shiroyama Promenade to overseas visitors. Mount Shiroyama, rising behind Fukushima-juku, is a historic mountain that once held a castle. Today it features a beautifully maintained walking trail, forming a wonderful hiking course with sweeping views of the Fukushima-juku townscape and the Kiso Valley.

The trail is relatively easy to walk, so anyone with an average level of fitness can enjoy it. The total distance is about 5 km. Near the summit, you can look down over the old streets of Fukushima-juku — an ideal viewpoint for taking in the full layout of this Edo-period post town. The waterfall along the Shiroyama Promenade is a particular must-see along the Nakasendo.

• Duration: About 1 hour 30 minutes round trip

• Difficulty: Beginner-friendly

• Best Time: Early morning or evening (sunset hours especially recommended)

To soothe feet tired from exploring Fukushima-juku, the free foot bath is a great option. Located near the site of the former Daikansho (magistrate's office), it's easy for anyone to drop by. It's a relaxing spot where you can refresh yourself from your travels in Kiso's pleasant air.

• Location: A few minutes' walk from the Fukushima Checkpoint and Daikansho site

• Price: Free

• Hours: Around 10:00 AM–6:00 PM (varies by season)

• Recommended to Bring: A towel

This is another spot I'd recommend to visitors traveling in Japan. On the temple grounds, you can admire an imposing wooden main hall that strongly reflects Muromachi-period architectural style, along with a Japanese garden that offers beauty in every season — cherry blossoms in spring, fresh greenery in summer, autumn foliage in fall, and snowy scenery in winter, each visit revealing a completely different atmosphere.

The photos below were mostly taken during my visit in December. Visiting in spring or summer would surely offer even more beautiful scenery!

• Admission Fee: 200 yen for adults

• Visiting Hours: 9:00 AM–4:30 PM

The Fukushima Checkpoint Ruins offer a valuable glimpse into the strict inspection procedures of the Edo period. Particularly striking is the display of original "tegata" — the identification permits used at the time. Often described as a precursor to the modern passport, this system is sure to fascinate many visitors from abroad.

English-language signage is being added, making this a surprisingly enjoyable attraction. If you've never visited a former checkpoint in Japan, be sure to stop by Fukushima Checkpoint — with swords and other items on display, it's more fun than you might expect.

• Admission Fee: 300 yen for adults; free for high school students and younger

• Opening Hours: 9:00 AM–5:00 PM (last entry 4:30 PM)

• Closed: New Year holidays (December 29–January 3)

One of the defining sights of Kiso-Fukushima is "gakezukuri" — houses built along the cliffs of river terraces carved out by the erosion of the Kiso River. This clever use of limited land, devised by past generations, creates a striking, one-of-a-kind view that's hard to find elsewhere.

The view from the "Uwanodan District" and from the bridges spanning the Kiso River is especially photogenic. The houses lining the riverbank look almost like a painting.