# Samnyeonsanseong, South Korea: what it is and when to go > Samnyeonsanseong is a place of interest (보은 삼년산성) in South Korea (Cheongju). Interests: Nature and History. The best time to visit is March to May and September to November. In June there are 14 h 29 of daylight, and in December, 9 h 31. It has articles in 4 Wikipedias, so it is not one of the busiest places in South Korea: 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/corea-del-sur/samnyeonsanseong-samnyeon-sanseong-fortress/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** Place of interest · Nature, History - **Local name:** 보은 삼년산성 - **Where:** South Korea - **Best time:** March to May and September to November. - **Nearest airport:** GMP Seoul, 146 km as the crow flies - **Coordinates:** 36.48817, 127.74237 ## What it is and where Samnyeonsanseong is a place of interest (보은 삼년산성) in South Korea (Cheongju). It has articles in 4 Wikipedias, so it is not one of the busiest places in South Korea: one to enjoy at a calmer pace. It is in [Cheongju](https://kokai.app/en/paises/asia/corea-del-sur/cheongju/), where this site lists 26 more places to see, 28 km from the centre. Its coordinates are 36.48817, 127.74237; the nearest main airport is Seoul Gimpo International Airport (GMP, Seoul), 146 km as the crow flies. How to get around South Korea (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/asia/corea-del-sur/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=36.488168%2C127.74237) - [Directions](https://www.google.com/maps/dir/?api=1&destination=36.488168%2C127.74237) It is one of the [Nature](https://kokai.app/en/paises/asia/corea-del-sur/naturaleza/) and [History](https://kokai.app/en/paises/asia/corea-del-sur/historia/) places in South Korea. 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 Samnyeonsanseong is **March to May and September to November**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Possible | 9 h 46 | | February | Possible | 10 h 40 | | March | Best time | 11 h 43 | | April | Best time | 12 h 56 | | May | Best time | 13 h 57 | | June | Possible | 14 h 29 | | July | Better not | 14 h 16 | | August | Possible | 13 h 24 | | September | Best time | 12 h 13 | | October | Best time | 11 h 03 | | November | Best time | 10 h 01 | | December | Possible | 9 h 31 | In June there are 14 h 29 of daylight, and in December, 9 h 31. 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. | What you come for | Best time | Possible | | --- | --- | --- | | Nature | April to May and September to October | November to March, June and August | | History | March to May and September to November | December to February, June and August | It is not the same trip whatever you come for: Samnyeonsanseong has a different season depending on what you want to do here, and [Kokai](https://kokai.app/en/) puts it in the right month for you. When to go to South Korea in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/asia/corea-del-sur/#cuando-ir). ## Before you go to South Korea To enter South Korea there are 10 things to sort out before you leave, starting with “A passport with six months' validity”: they are all, with their deadlines, in [the South Korea checklist](https://kokai.app/en/paises/asia/corea-del-sur/#antes-de-salir). Currency: South Korean won (KRW); plugs: Type C and F · 220 V · 60 Hz (the same plug as in Spain); emergencies: 112 police · 119 ambulance and fire · 1330 tourist information, in Spanish. 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 - [Beopjusa](https://kokai.app/en/paises/asia/corea-del-sur/beopjusa-temple/): Temple · 10 km - [Gubyeongsan](https://kokai.app/en/paises/asia/corea-del-sur/mt-gubyeong/): Mountain in South Korea · 11 km - [Songnisan National Park](https://kokai.app/en/paises/asia/corea-del-sur/songnisan-national-park/): Nation park in South Korea · 19 km - [Johangsan](https://kokai.app/en/paises/asia/corea-del-sur/johangsan/): Mountain in South Korea · 24 km - [Daeyasan](https://kokai.app/en/paises/asia/corea-del-sur/daeyasan/): Mountain in South Korea · 26 km Distances are as the crow flies. Everything else is in [the South Korea guide](https://kokai.app/en/paises/asia/corea-del-sur/). ## More in South Korea: Nature - [Hallasan](https://kokai.app/en/paises/asia/corea-del-sur/hallasan/): mountain in Jeju, South Korea - [Cheonggyecheon](https://kokai.app/en/paises/asia/corea-del-sur/cheonggyecheon-stream-park/): stream in Seoul, South Korea - [Namsan](https://kokai.app/en/paises/asia/corea-del-sur/namsan-mountain/): mountain in Seoul, South Korea - [Seoraksan National Park](https://kokai.app/en/paises/asia/corea-del-sur/seoraksan-national-park/): national park in South Korea - [Donggung Palace and Wolji Pond](https://kokai.app/en/paises/asia/corea-del-sur/donggung-palace-and-wolji-pond/): Haenggung Palace in Wolseong, Gyeongju, Gyeongsangbuk-do, Korea - [Seongsan Ilchulbong](https://kokai.app/en/paises/asia/corea-del-sur/seongsan-ilchulbong-peak/): South Korean protected area Every South Korea place under Nature, each with its season, is on [its page](https://kokai.app/en/paises/asia/corea-del-sur/naturaleza/). ## Frequently asked questions ### What is Samnyeonsanseong? It is a place of interest (보은 삼년산성 in the local language) in South Korea. It has articles in 4 Wikipedias, so it is not one of the busiest places in South Korea: one to enjoy at a calmer pace. ### When is the best time to visit Samnyeonsanseong? March to May and September to November. In June there are 14 h 29 of daylight, and in December, 9 h 31. ### How do you get to Samnyeonsanseong? The nearest main airport is Seoul Gimpo International Airport (GMP), 146 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=36.488168%2C127.74237) opens the route on the map, and how to get around South Korea is explained in [its country guide](https://kokai.app/en/paises/asia/corea-del-sur/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the South Korea 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 [Beopjusa](https://kokai.app/en/paises/asia/corea-del-sur/beopjusa-temple/), [Gubyeongsan](https://kokai.app/en/paises/asia/corea-del-sur/mt-gubyeong/), [Songnisan National Park](https://kokai.app/en/paises/asia/corea-del-sur/songnisan-national-park/). The rest is in [the South Korea guide](https://kokai.app/en/paises/asia/corea-del-sur/). Data from [OpenStreetMap](https://www.openstreetmap.org/way/925460066), licensed under the ODbL. More about Samnyeonsanseong on [Wikipedia](https://en.wikipedia.org/wiki/Samnyeonsanseong). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).