# Koizumi Castle, Japan: what it is and when to go > Koizumi Castle is a visitor attraction (小泉城) in Japan. Interests: History. The best time to visit is February to May and October to November. In June there are 14 h 27 of daylight, and in December, 9 h 32. It has an article in one Wikipedia, so it is not one of the busiest places in Japan: one to enjoy at a calmer pace. Here is what it is, where it lies, when to come, how to get there and what else is nearby to turn it into a trip. - Address: https://kokai.app/en/paises/asia/japon/koizumi-castle/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** Activity · History - **Local name:** 小泉城 - **Where:** Japan - **Best time:** February to May and October to November. - **Nearest airport:** HND Tokyo, 86 km as the crow flies - **Coordinates:** 36.26141, 139.414 ## What it is and where Koizumi Castle is a visitor attraction (小泉城) in Japan. It has an article in one Wikipedia, so it is not one of the busiest places in Japan: one to enjoy at a calmer pace. Its coordinates are 36.26141, 139.414; the nearest main airport is Tokyo Haneda International Airport (HND, Tokyo), 86 km as the crow flies. How to get around Japan (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/asia/japon/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=36.261407%2C139.414001) - [Directions](https://www.google.com/maps/dir/?api=1&destination=36.261407%2C139.414001) It is one of the [History](https://kokai.app/en/paises/asia/japon/historia/) places in Japan. In [Kokai](https://kokai.app/en/) it is already on your trip map next to the places you save yourself, and it goes into a day's plan with one tap. ## When to go The best time to visit Koizumi Castle is **February to May and October to November**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 9 h 47 | | February | Best time | 10 h 40 | | March | Best time | 11 h 43 | | April | Best time | 12 h 56 | | May | Best time | 13 h 56 | | June | Possible | 14 h 27 | | July | Possible | 14 h 14 | | August | Possible | 13 h 23 | | September | Possible | 12 h 13 | | October | Best time | 11 h 03 | | November | Best time | 10 h 02 | | December | Possible | 9 h 32 | In June there are 14 h 27 of daylight, and in December, 9 h 32. Daylight hours are calculated from the site's latitude for the 15th of each month; when planning a full day on foot they matter as much as the weather. When to go to Japan in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/asia/japon/#cuando-ir). ## Before you go to Japan To enter Japan there are 10 things to sort out before you leave, starting with “A valid passport covering your whole stay”: they are all, with their deadlines, in [the Japan checklist](https://kokai.app/en/paises/asia/japon/#antes-de-salir). Currency: Japanese yen (JPY); plugs: Type A and B · 100 V · 50/60 Hz (you need an adapter); emergencies: 110 police · 119 ambulance and fire. In [Kokai](https://kokai.app/en/) you tick off the checklist inside your trip, and each item reminds you when it is time to do it. ## What is nearby - [Kangi-in](https://kokai.app/en/paises/asia/japon/kangiin-kumagaya/): Buddhist temple · 5.1 km - [Ojima Onsen - Tone no Yu](https://kokai.app/en/paises/asia/japon/ojima-onsen-tone-no-yu/): Onsen · 6.4 km - [Kanayama Castle](https://kokai.app/en/paises/asia/japon/kanayama-castle/): Building in Ota, Gunma Prefecture, Japan · 7.0 km - [Mount Kanayama](https://kokai.app/en/paises/asia/japon/mt-kanayama/): Mountain in Ōta, Gunma prefecture, Japan · 7.0 km - [Ashikaga Gakkō](https://kokai.app/en/paises/asia/japon/ashikaga-gakko/): Historical academic institution located in Ashikaga city, Tochigi Prefecture, Japan · 9.0 km Distances are as the crow flies. Everything else is in [the Japan guide](https://kokai.app/en/paises/asia/japon/). ## More in Japan: History - [Mount Fuji](https://kokai.app/en/paises/asia/japon/monte-fuji/): volcano in Yamanashi and Shizuoka Prefectures, Japan - [Kiyomizu-dera](https://kokai.app/en/paises/asia/japon/kiyomizu-dera/): Buddhist temple in Higashiyama-ku, Kyoto - [Himeji Castle](https://kokai.app/en/paises/asia/japon/himeji-2/): Japanese castle complex - [Hiroshima Peace Memorial](https://kokai.app/en/paises/asia/japon/cupula-de-genbaku/): architectural structure - [Itsukushima Shrine](https://kokai.app/en/paises/asia/japon/santuario-itsukushima/): Shinto shrine in Hiroshima Prefecture, Japan - [Kinkaku-ji](https://kokai.app/en/paises/asia/japon/kinkaku-ji/): Zen Buddhist temple in Kyoto, Japan Every Japan place under History, each with its season, is on [its page](https://kokai.app/en/paises/asia/japon/historia/). ## Frequently asked questions ### What is Koizumi Castle? It is a visitor attraction (小泉城 in the local language) in Japan. It has an article in one Wikipedia, so it is not one of the busiest places in Japan: one to enjoy at a calmer pace. ### When is the best time to visit Koizumi Castle? February to May and October to November. In June there are 14 h 27 of daylight, and in December, 9 h 32. ### How do you get to Koizumi Castle? The nearest main airport is Tokyo Haneda International Airport (HND), 86 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=36.261407%2C139.414001) opens the route on the map, and how to get around Japan is explained in [its country guide](https://kokai.app/en/paises/asia/japon/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the Japan map, next to the places you save yourself: add it to a day's plan, give it a time and, if you like, get a reminder when you pass nearby. ### What else is around here? Nearby you have [Kangi-in](https://kokai.app/en/paises/asia/japon/kangiin-kumagaya/), [Ojima Onsen - Tone no Yu](https://kokai.app/en/paises/asia/japon/ojima-onsen-tone-no-yu/), [Kanayama Castle](https://kokai.app/en/paises/asia/japon/kanayama-castle/). The rest is in [the Japan guide](https://kokai.app/en/paises/asia/japon/). Data from [OpenStreetMap](https://www.openstreetmap.org/node/2486497935), licensed under the ODbL. More about Koizumi Castle on [Wikipedia](https://ja.wikipedia.org/wiki/%E5%B0%8F%E6%B3%89%E5%9F%8E). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).