Leave Tokyo Station around 1:55–2:15 PM on the Tokaido Shinkansen for Toyohashi Station. A Hikari or Nozomi journey takes roughly 90–110 minutes; check the exact September 2026 timetable and reserve a window seat on the right side when heading west if you would like a chance of seeing Mount Fuji in clear weather. Before boarding, buy an ekiben and drink for the ride. On arrival, use the station’s coin lockers, or arrange hotel luggage storage if you are staying nearby; Cocola Avenue is directly beside the station, so there is no need to carry bags far.
Spend about 45 minutes browsing Cocola Avenue, a handy first look at Toyohashi’s shops, cafés, and local atmosphere. From the station, walk or take a short tram or taxi toward Toyohashi Park and Yoshida Castle—allow around 10–15 minutes by taxi, or roughly 20 minutes on foot. The park is pleasant for a relaxed stroll, particularly as the light softens, and the castle grounds offer a compact introduction to Toyohashi’s history beside the Toyokawa River. The castle keep and nearby facilities may close by late afternoon, so treat this as an exterior and grounds visit; entry to the park area is generally free.
Return toward Toyohashi Station for dinner in the streets around the east exit. Look for a neighborhood restaurant serving miso katsu, Toyohashi-style gyoza, or grilled eel; expect approximately ¥1,500–¥3,500 per person. Many smaller places open for dinner from about 5:00 PM, but popular restaurants can fill quickly after 6:30 PM, so arrive early or ask your hotel for a same-day recommendation. Keep the evening easy, since tomorrow’s Iida Line departure is planned for around 6:00 AM—pick up breakfast and drinks at the station or a convenience store before turning in.
Start at Toyohashi Station around 5:30–5:45 AM for the planned early departure, allowing time to find the correct JR platform and buy breakfast and drinks. The full ride to Iida Station takes roughly 6.5–7.5 hours, with long stretches between stations and limited food options onboard, so bring a packed meal. Keep your camera ready as the train gradually leaves the urban plain for the wooded valleys of southern Nagano. If the timetable gives you about 45–60 minutes, get off at Tenryūkyō Station for a short walk toward Tenryūkyō Gorge; the riverside scenery and steep forested slopes are the highlight of this part of the line. Stay close to the station and confirm the next departure before wandering, since missing it can significantly disrupt the day.
Continue to Iida Station, arriving in the mid- to late afternoon. From the station, allow around 15–20 minutes by local bus or taxi to the Iida City Museum of Ningyo Jōruri; check its September opening hours before departure, as small regional museums often close around 4:30–5:00 PM. Spend about an hour exploring the displays on Ningyō Jōruri puppet theatre, one of the Ina Valley’s distinctive cultural traditions. Return toward central Iida and walk or take a short taxi ride to the Iida Castle Ruins and Kikyōgaoka Park. The remaining stonework is modest, but the raised park gives broad views over the city and surrounding Ina Valley; allow roughly 45 minutes, especially around sunset.
Finish near Iida Station with a relaxed local dinner, ideally between 6:30 and 8:00 PM while restaurants are still serving. Look for a small soba shop or izakaya offering regional buckwheat noodles and gohei mochi, grilled rice cakes coated with a sweet-savory walnut or miso sauce; budget approximately ¥1,000–¥2,500 per person. Restaurant choices around the station are limited and some close early, so check hours on the day or ask your accommodation for a current recommendation. After dinner, keep the evening easy—tomorrow’s northbound journey begins in the same mountain region, and the last local buses and taxis can be sparse.
Take the morning JR Iida Line service from Iida Station toward Okaya Station, allowing roughly 3–4 hours for this final northern stretch of the line. Keep your phone charged and carry snacks, as trains are infrequent and station facilities become sparse outside the larger towns. On arrival, store luggage in a station locker if available; the Okaya area is compact, but the afternoon’s shrine and lake visits are more conveniently handled by local bus or taxi than on foot.
Continue south toward Suwa Taisha Kamisha-Honmiya, one of the region’s most important Shinto shrines. Set aside about an hour for the approach, large grounds, and distinctive sacred trees; the shrine is generally accessible from early morning until late afternoon, with no admission charge. From the shrine, allow approximately 20–30 minutes by local bus or taxi toward Lake Suwa, depending on your exact stop and traffic. Along the waterfront, spend around 1½ hours walking the promenade or renting a bicycle if weather and rental availability cooperate. The open views toward the surrounding mountains are particularly pleasant in the afternoon; bring a light jacket, as the lakeside can feel cool even in September.
Return toward Okaya and visit Katakura Hall, the former silk-industry building and one of the town’s most interesting reminders of its industrial past. Allow about 45 minutes, but check the day’s opening hours before setting out, as smaller cultural facilities in Okaya can close relatively early or have irregular holidays. It is a short local transfer from the station area, with a taxi the simplest option if you are carrying luggage. Finish near Okaya Station or Kamisuwa Station with a regional dinner: look for handmade soba, local lake fish, or a set meal, usually ¥1,200–¥3,000 per person. Reserve or arrive before 7:00 PM where possible, since smaller restaurants may close early; if staying overnight, Kamisuwa generally offers the livelier evening selection.
After arriving in the Suwa area, take a local bus or taxi to Tateishi Park, above Kamisuwa. Allow about 15–20 minutes from Kamisuwa Station by taxi; buses are less frequent, so a taxi is the practical choice, usually around ¥1,500–¥2,500 one way. Spend roughly 45 minutes enjoying the broad view over Lake Suwa, the surrounding mountains, and the compact lakeside town below. September mornings are often clearest, so this is best done before clouds build over the mountains.
Continue downhill to the Kitazawa Museum of Art in Kamisuwa, around 10 minutes by taxi or roughly 25 minutes on foot. The museum is known for its modern art and delicate glass collection; allow 1–1.5 hours. It generally opens from 9:00 AM to 6:00 PM, though opening days and exhibitions can change, so check the official schedule before setting out. Admission is typically around ¥1,000–¥1,500. From there, take a short taxi ride or walk toward Kōan Temple, a quieter stop where you can slow the pace and spend about 45 minutes among the temple buildings and greenery.
Head back to Kamisuwa Station for an early lunch around 11:30 AM–12:30 PM. Look for a station-area soba restaurant serving handmade noodles, tempura, or a Nagano-style set meal; budget ¥1,000–¥2,500 per person. Keep this meal efficient, as the next useful train connection may not be for some time. Before boarding, collect luggage and confirm whether your reserved Limited Express Azusa departs from Kamisuwa or Okaya—some services require a short local connection to Okaya Station.
Reserve seats in advance through JR-EAST Train Reservation or at a staffed ticket office, particularly if carrying larger luggage. The Azusa takes roughly 3–3.5 hours to Shinjuku; from there, allow another 20–40 minutes across Tokyo on the JR Chuo or Yamanote lines, depending on your final destination. A departure around 1:00–2:00 PM should bring you back in the early evening, with enough margin for the station transfer and luggage.
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