Kosai Travel Guide

Planning a trip to Kosai, Japan? Our travel guide provides all the information you need to know about where to go, what to see, where to stay, and more.

Introduction to Kosai

Located in the Shizuoka prefecture in Japan’s Chubu region, Kosai is a small city that offers visitors a chance to experience both natural beauty and cultural heritage. From breathtaking views to traditional festivals, Kosai has much to offer any kind of traveler.

List of Places to Visit in Kosai

Whether you’re a nature lover or a history buff, here are some of the top attractions to check out in Kosai:

Culturally Important Attractions: Museums and Historical Places

  • Mizumaki Castle: A historic castle that played an important role during the Sengoku period.

  • Okuni Shrine: A popular local shrine that holds the annual Okuni Festival, one of Kosai’s biggest events.

  • Ichinomiya Beach: A beautiful beach steeped in history and folklore, with a temple that offers sweeping views of the sea.

Natural Attractions of Kosai: Outdoor Adventures and Scenic Views

  • Mt. Ashitaka: A mountain with a hiking trail that leads up to a breathtaking panoramic view of Kosai and beyond.

  • Kunozan Toshogu Shrine: A beautiful shrine nestled in the mountains, accessible by a scenic cable car ride.

  • Hamamatsu Flower Park: A nature lover’s paradise with a variety of flowers and plants on display.

Hiking/Biking Routes of Kosai

For those looking to explore the natural beauty of Kosai, there are several hiking and biking routes worth exploring. Some of the best options include:

  • Mt. Ashitaka Hiking Trail: A moderate-to-difficult trail that offers stunning views of the city.

  • Kosai Cycling Road: A well-maintained cycling path that winds through the city’s countryside, past rice paddies and other picturesque scenery.

  • Hamamatsu Flower Park Walking Trail: A gentle walking path that takes visitors through the flower park, with many opportunities to observe and photograph the flora.

Best Things to Do in Kosai: Activities and Tours

There are several fun and engaging activities to participate in while in Kosai. Here are some of the best options:

  • Attend the Okuni Festival: An annual festival that takes place in October, featuring traditional dancing, music, and food.

  • Take a cooking class: Learn how to cook local specialties and experience the unique flavors of Kosai.

  • Visit a traditional Japanese tea house: Enjoy a relaxing and authentic tea ceremony, complete with traditional sweets.

Week-Long Itinerary for Kosai

If you’re planning to spend a week in Kosai, here’s an itinerary to help you make the most of your time:

Day Activity
1 Explore the Ichinomiya Beach area, including visits to the temple and local restaurants
2 Hike the Mt. Ashitaka trail, followed by a visit to the Kunozan Toshogu Shrine
3 Visit the Mizumaki Castle and adjacent park, followed by an evening in downtown Kosai
4 Stop by Hamamatsu Flower Park, attend a cooking class in the afternoon
5 Participate in a traditional tea ceremony, followed by an afternoon bike ride on the Kosai Cycling Road
6 Attend the Okuni Festival and experience local traditions
7 Relax and take a day trip to one of the nearby onsen (hot springs) for a final bit of relaxation before departing

Food and Drink Scene of Kosai

One of the best things about traveling is experiencing new flavors and cuisines, and Kosai is no exception. Here are some must-try dishes and local beverages:

Must-Try Dishes

  • Hamamatsu gyoza: Dumplings filled with pork and vegetables, often served with soy sauce and ginger.

  • Shizuoka oden: A traditional hot pot-style dish with fish cakes, tofu, and vegetables, typically served in a flavorful broth.

  • Kuro Hanpen: A fish cake made with black cod and other ingredients, served grilled or fried.

Local Beverages

  • Shizuoka sake: A popular rice wine that is recognized for its high quality and unique flavors.

  • Shizuoka tea: Known for its distinctive flavor, Shizuoka tea is grown in the region and is a staple of Japanese culture.

Where to Stay in Kosai: Hotels, Hostels, and Guesthouses

Whether you’re on a budget or looking for luxury, there are a variety of accommodation options available in Kosai. Here are a few recommendations:

  • Hotel Route-Inn Kosai Inter: A modern hotel located near the city’s highways, offering comfortable rooms and convenient amenities.

  • Kosai Guesthouse: A cozy guesthouse with an English-speaking staff, perfect for budget-conscious travelers.

  • Okuni Shrine Lodge: A traditional Japanese inn with stunning views of the surrounding mountains.

What to Buy in Kosai: Souvenirs and Local Products to Bring Home

If you’re looking for unique souvenirs or gifts to bring back from your trip, here are some top recommendations:

  • Hamamatsu gyoza: Many local shops sell DIY gyoza kits, allowing you to bring a taste of Kosai back home.

  • Shizuoka tea: With its distinct flavor and high quality, Shizuoka tea makes for a great gift.

  • Kuro Hanpen: This specialty fish cake is a unique food souvenir that can only be found in Kosai.

Local Culture and Customs of Kosai

When visiting Kosai, it’s important to be respectful of local customs and cultural norms. Here are a few things to keep in mind:

  • Remove your shoes when entering someone’s home or a traditional inn.

  • Respect local etiquette when visiting shrines or temples, such as bowing and refraining from loud talking.

  • Observe cleanliness and proper waste disposal practices.

Best Time to Visit Kosai

The best time to visit Kosai largely depends on your interests and preferences. Spring and fall offer ideal weather for outdoor activities, while winter brings snow and the opportunity for winter sports. Summer is the peak tourist season, with humid weather and crowded attractions.

Do’s and Don’ts of Kosai

When traveling to Kosai, there are a few things to keep in mind to ensure a pleasant and respectful visit:


  • Try local food and beverages.

  • Respect local customs and traditions.

  • Embrace the natural beauty of the region by taking part in outdoor activities.


  • Disrespect local customs and traditions.

  • Litter or damage local landmarks or natural environments.

  • Cause a disturbance or behave inappropriately in public areas.

Safety and Health

Kosai is generally safe and well-maintained. However, it’s always important to take some basic safety and health precautions when traveling. Here are some tips:

Safety in Kosai

  • Be aware of road safety when crossing streets or driving.

  • Keep valuable items securely stored, especially when traveling alone.

  • Familiarize yourself with local emergency services in case of an emergency.

Health in Kosai

  • Bring any necessary medications or prescriptions with you.

  • Practice good hygiene habits to prevent illness.

  • Drink bottled water to avoid gastrointestinal issues.

Getting to Kosai: Transportation Options and Logistics

Kosai is well-connected to other parts of Japan, with several transportation options available:

Airports Near Kosai

  • Chubu Centrair International Airport (NGO): A major airport located about 1.5 hours from Kosai by car.

  • Shizuoka Airport (FSZ): A smaller airport, about 45 minutes from Kosai by car.

Bus Stations Near Kosai

  • Kosai Bus Terminal: Located in the city center, offering local and regional bus services.

  • Hamamatsu Bus Terminal: A major transportation hub about 30 minutes from Kosai by car.

Other Options

  • Private car: If you prefer to drive, car rental services are available in Kosai and at the airports.

  • Train: The nearest train station is in Hamamatsu, which offers several lines connecting to other cities in the region.

How to Get Around in Kosai

Kosai is a small city, so walking or biking are great options for getting around town. Rental cars and taxis are also available for travel outside of the city center.

Where to Go Next from Kosai: Nearby Destinations and Excursions

If you’re interested in exploring other parts of the region, here are some popular destinations within a reasonable distance of Kosai:

  • Hamamatsu: A larger city with a vibrant downtown, located about 30 minutes away by car.

  • Shizuoka: A coastal city about 1 hour away by train, with great seafood and stunning views of Mt. Fuji.

  • Atami: A popular hot springs destination about 1 hour away by train, with beautiful views of the ocean.


From its natural beauty to its rich cultural heritage, Kosai is a hidden gem that is worth visiting. With this comprehensive guide, you should have all the information you need to start planning your trip to this beautiful city in Japan’s Chubu region.