{"id":1426,"date":"2026-09-14T13:28:49","date_gmt":"2026-09-14T13:28:49","guid":{"rendered":"https:\/\/www.shirolog.info\/?p=1426"},"modified":"2026-09-14T13:30:44","modified_gmt":"2026-09-14T13:30:44","slug":"129-tatsuokajo","status":"publish","type":"post","link":"https:\/\/www.shirolog.info\/en\/129-tatsuokajo\/","title":{"rendered":"[Continued 100 Fine Castles of Japan – No.129] Exploring Tatsuoka Castle Goryokaku: A Rare Star-Shaped Fortress in Nagano"},"content":{"rendered":"\n

1. Basic Info to Know Before You Visit<\/h2>\n\n\n\n
Item<\/strong><\/td>Details<\/strong><\/td><\/tr><\/thead>
Castle Name (Number)<\/strong><\/td>Tatsuoka Castle (Continued 100 Fine Castles of Japan No. 129)<\/td><\/tr>
Alternate Name \/ Location<\/strong><\/td>Tatsuoka Castle Goryokaku, Taguchi Castle \/ 564 Taguchi, Saku City, Nagano Prefecture<\/td><\/tr>
Built By \/ Construction Started<\/strong><\/td>Matsudaira Norikata (Ogyu Yuzuru) \/ Construction began in Genji 1 (1864)<\/td><\/tr>
Key Remaining Structures<\/strong><\/td>Moat (Water Moat \/ Star-shaped Bastion), Earthworks, Kitchen (Surviving original building), Stone Walls<\/td><\/tr>
Stamp Location<\/strong><\/td>Tatsuoka Castle Goryokaku “Deai-no-Yakata” Visitor Center (Hours: 9:00 AM \u2013 4:00 PM, Closed: Tuesdays & New Year Holidays)<\/td><\/tr>
Parking<\/strong><\/td>Free parking lot in front of Deai-no-Yakata (Approx. 4\u20135 spaces, low turnover friction, smooth parking)<\/td><\/tr>
Estimated Duration<\/strong><\/td>30 min (Quick walk around Deai-no-Yakata and ruins) to 1 hr (Video presentation & detailed appreciation), approx. 2 hrs including the observation deck hike<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

2. Estimated Visiting & Exploration Time<\/h2>\n\n\n\n
    \n
  • Duration by Tour Route<\/strong>:\n
      \n
    • Deai-no-Yakata & Grounds Quick Walk Route (Approx. 30 mins)<\/strong>: The standard itinerary to stamp your 100 Fine Castles stamp book, browse the exhibits in “Deai-no-Yakata,” and check out the surviving kitchen building and water moat.<\/li>\n\n\n\n
    • Exhibits & Video Deep-Dive Route (Approx. 1 hour)<\/strong>: A deeper exploration where you watch the commentary video at “Deai-no-Yakata” to the end, uncovering Western studies (Rangaku) in the late Edo period, Lord Matsudaira Norikata\u2019s background, and the star-shaped layout logic.<\/li>\n\n\n\n
    • Observation Deck Hike & Full View Route (Approx. 2 hours)<\/strong>: The full experience that includes a hike up toward the summit’s observation area to look down upon Tatsuoka Castle’s star-shaped layout.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • Recommended Time of Visit<\/strong>:\n
        \n
      • Morning between 9:00 AM and 11:00 AM, right when “Deai-no-Yakata” opens, is ideal. It is quiet with few visitors, and the lighting is perfect for taking serene photos of the earthworks reflected on the water moat.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

        3. Parking, Access, and Crowd Conditions<\/h2>\n\n\n\n
          \n
        • Parking Location, Fee, and Capacity<\/strong>:\n
            \n
          • Free parking is available right next to the “Deai-no-Yakata” information center in front of the site. While capacity is small at around 4 to 5 vehicles, tourist turnover is fast, so the risk of not finding a spot is relatively low.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • Weekend \/ Holiday Crowd Trends & Tips<\/strong>:\n
              \n
            • Unlike major tourist sites like Hakodate Goryokaku, visitors here are primarily history buffs and enthusiasts on the 100 Fine Castles stamp rally. Heavy crowds are rare, allowing for smooth parking anytime.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

              4. Admission Fees and Discount Information<\/h2>\n\n\n\n
                \n
              • Admission Fee Breakdown<\/strong>:\n
                  \n
                • Castle Site Walk<\/strong>: Free<\/li>\n\n\n\n
                • “Deai-no-Yakata” Admission<\/strong>: Free<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                • How to Save<\/strong>:\n
                    \n
                  • Since access to the Tatsuoka Castle site and “Deai-no-Yakata” is completely free, there’s no need to arrange advance discount passes via JAF or Asoview. It’s a fantastic spot to drop by spontaneously!<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

                    5. Recommended Tour Route & Castle Map (Field Report & Structural Analysis)<\/h2>\n\n\n\n

                    \u3010Highlight 1\u3011Analysis of Defense Logic: Western Military Science vs. Late Edo Reality<\/h3>\n\n\n\n

                    There are only two star-shaped fortresses (Goryokaku) in all of Japan\u2014and the second one is right here in Saku City, Nagano Prefecture: Tatsuoka Castle.<\/p>\n\n\n\n

                    The builder, Matsudaira Norikata (Ogyu Yuzuru), was a highly analytical lord heavily influenced by Dutch Studies (Rangaku) and Western military science. To adapt to artillery warfare following Commodore Perry’s arrival, he personally designed a star-shaped “trace italienne” (bastion fort) layout engineered to completely eliminate artillery blind spots.<\/p>\n\n\n\n

                    Standing on-site, looking at the water moat and earthworks, you’ll be breathless taking in the precise angles engineered to unleash crossfire on invaders, alongside gun batteries placed at the protruding bastions. Yet inside stood not a grand keep, but a single-story palace resembling Kyoto’s Nijo Castle. Furthermore, due to budget shortages, the Bakumatsu era ended with parts of the star’s embrasures left incomplete. Observing this realistic gap between an ideal Western defense model and the financial strains of a late-Edo feudal domain is the ultimate thrill for castle architecture enthusiasts.<\/p>\n\n\n\n

                    A monument honoring Matsudaira Norikata’s achievements stands within the grounds, showcasing the star-shaped blueprint alongside historical notes on his founding of the Hakuaisha (predecessor to the Japanese Red Cross Society) and establishment of Japan’s decoration\/medal system.<\/p>\n\n\n\n

                    \"Boy<\/figure>\n\n\n\n

                    Stepping past the castle gate site and crossing the wooden bridge, stone walls and water moats stretch out in unique geometric angles. The seamless blend of Western bastion design and traditional Japanese stone-masonry techniques creates a distinctive atmosphere found nowhere else.<\/p>\n\n\n\n

                    \u3010Highlight 2\u3011Family Discovery Episode: The Regret of the Overhead View & A Shocking School Project<\/h3>\n\n\n\n

                    Our main goal for this visit was to view the entire star shape from above. We heard there was an observation platform on the hill behind the castle, so we decided to try for it… but upon checking the local guide, we found out the road was extremely narrow and nerve-wracking to drive, while hiking on foot required serious stamina and time. Prioritizing safety and energy, we regretfully gave up. “A star fortress is really meant to be seen from above…” I couldn’t help feeling a tinge of disappointment, but that realistic realization is part of the true magic of visiting in person!<\/p>\n\n\n\n

                    \"Stone-walled<\/figure>\n\n\n\n

                    Another surprising discovery inside the grounds was an elementary school building standing right where the main palace (Honmaru Goten) used to be! Not having researched this beforehand, I thought, “Is it empty because of summer break?”\u2014only to learn the school had already closed permanently. The lingering atmosphere of children once learning inside a historic castle enclosure, combined with the quiet melancholy of the former schoolhouse, created a very unique ambiance.<\/p>\n\n\n\n

                    The most memorable highlight, however, was a summer independent research project by a local elementary student displayed inside “Deai-no-Yakata.”<\/p>\n\n\n\n

                    The project was titled “Surveying Visitors to Tatsuoka Castle: What Is Your Purpose?”\u2014and the overwhelming #1 answer on the bar graph was… “To get the 100 Fine Castles (Continued 100) Stamp”<\/strong>!<\/p>\n\n\n\n

                    Seeing an elementary student’s brutally honest and accurate research made me burst out laughing: “Hey, I’m one of those respondents!” It was a wonderful discovery to see the real data behind castle lovers trekking out for the stamp rally.<\/p>\n\n\n\n

                    6. Recommended Lunch Spots & Visiting with Kids Around Tatsuoka Castle<\/h2>\n\n\n\n
                      \n
                    • Street-side Treat! “Fist of the North Star Manhole Covers”<\/strong>:\n
                        \n
                      • Saku City is the hometown of Buronson, creator of the legendary manga Fist of the North Star<\/em> (Hokuto no Ken). Because of this, custom manhole covers featuring Kenshiro, Raoh, and other characters are placed along streets around Tatsuoka Castle and key spots across the city! Spotting them like a treasure hunt with a joyful shout of “Look, it’s Kenshiro!” makes for an amazing drive activity when traveling with kids.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                      • Castle Touring Fuel (Local Lunch & Souvenirs)<\/strong>:\n
                          \n
                        • The area immediately surrounding Tatsuoka Castle is a quiet residential and agricultural countryside. A short drive into central Saku City unlocks plenty of local eateries serving Saku’s famous carp dishes (Shinshu Saku-koi) and smooth Shinshu buckwheat noodles (soba).<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                        • Tips for Families & Parents<\/strong>:\n
                            \n
                          • Paths along the castle grounds and water moats are flat and easy to navigate, making it a stress-free stroll for toddlers and strollers.<\/li>\n\n\n\n
                          • If you plan to head up to the observation deck, be prepared for steep slopes and narrow mountain trails requiring proper trekking shoes and pacing. Keeping your trip focused on “Deai-no-Yakata,” the kitchen building, and the moat walk is a smart, relaxed alternative.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n

                            7. Summary & Nearby Castle Itinerary Guide (Road Trip Hints)<\/h2>\n\n\n\n
                              \n
                            • Tatsuoka Castle Review Recap<\/strong>:\n
                                \n
                              • One of Only Two Star Forts in Japan<\/strong>: The trace italienne bastion layout built for artillery warfare and the surviving Kitchen building are absolute must-sees.<\/li>\n\n\n\n
                              • Duration Estimate<\/strong>: If you focus on Deai-no-Yakata and grounds, you can enjoy a quick, satisfying visit in 30 to 60 minutes.<\/li>\n\n\n\n
                              • Stamp & Exhibits<\/strong>: Collect your stamp at “Deai-no-Yakata” and don’t miss the local student’s brilliant research project!<\/li>\n\n\n\n
                              • Observation Deck Hike<\/strong>: Assess road conditions and energy levels before attempting the overhead star-view hike.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                              • \u3010Recommended\u3011Pairing Tatsuoka Castle with Nearby Castles!<\/strong>:\n
                                  \n
                                • Nagano’s Eastern Toshin region is packed with historic strongholds no castle fan should miss. Pair your visit with Komoro Castle’s unique “hole castle” topography or Ueda Castle’s Sanada clan heritage to deeply experience Shinshu’s castle history.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
                                • <\/li>\n<\/ul>\n\n\n\n

                                  <\/p>\n","protected":false},"excerpt":{"rendered":"

                                  1. Basic Info to Know Before You Visit Item Details Castle Name (Number) Tatsuoka Castle (Continued 100 Fine Castles of Japan No. 129) Alternate Name \/ Location Tatsuoka Castle Goryokaku, Taguchi Castle \/ 564 Taguchi, Saku City, Nagano Prefecture Built By \/ Construction Started Matsudaira Norikata (Ogyu Yuzuru) \/ Construction began in Genji 1 (1864) […]<\/p>\n","protected":false},"author":1,"featured_media":1424,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"swell_btn_cv_data":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_locale":"en_US","_original_post":"https:\/\/www.shirolog.info\/129-tatsuokajo\/","_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[4],"tags":[17],"class_list":["post-1426","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-castle","tag-2026nagano","en-US"],"acf":[],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/phc6Nz-n0","jetpack_featured_media_url":"https:\/\/www.shirolog.info\/wp-content\/uploads\/2026\/01\/PXL_20260814_053902834-1-scaled.jpg","_links":{"self":[{"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/posts\/1426","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/comments?post=1426"}],"version-history":[{"count":2,"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/posts\/1426\/revisions"}],"predecessor-version":[{"id":1435,"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/posts\/1426\/revisions\/1435"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/media\/1424"}],"wp:attachment":[{"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/media?parent=1426"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/categories?post=1426"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shirolog.info\/wp-json\/wp\/v2\/tags?post=1426"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}