# Carlsten, Sweden: what it is and when to go > Carlsten is a fortress in Marstrand, Sweden (Skärhamn). Interests: History. The best time to visit is December to February and May to September. In June there are 17 h 47 of daylight, and in December, 6 h 13. It has articles in 12 Wikipedias, so it is not one of the busiest places in Sweden: 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/europa/suecia/carlstens-fastning/ - Reviewed on: 2026-10-02 - Language: en ## In a nutshell - **What it is:** Fortress in Marstrand, Sweden · History - **Where:** Sweden - **Best time:** December to February and May to September. - **Nearest airport:** GOT Göteborg, 48 km as the crow flies - **Website:** [carlsten.se](https://carlsten.se) - **Coordinates:** 57.88621, 11.57868 ## What it is and where Carlsten is a fortress in Marstrand, Sweden (Skärhamn). It has articles in 12 Wikipedias, so it is not one of the busiest places in Sweden: one to enjoy at a calmer pace. It is in [Skärhamn](https://kokai.app/en/paises/europa/suecia/skarhamn/), where this site lists 29 more places to see, 12 km from the centre. Its coordinates are 57.88621, 11.57868; the nearest main airport is Göteborg Landvetter Airport (GOT, Göteborg), 48 km as the crow flies. How to get around Sweden (train, car, bus) is covered in [its country guide](https://kokai.app/en/paises/europa/suecia/#moverse). - [Where it is](https://www.google.com/maps/search/?api=1&query=57.886214%2C11.578684) - [Directions](https://www.google.com/maps/dir/?api=1&destination=57.886214%2C11.578684) It is one of the [History](https://kokai.app/en/paises/europa/suecia/historia/) places in Sweden. 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 Carlsten is **December to February and May to September**. | Mes | Época | Hours of daylight | | --- | --- | --- | | January | Best time | 6 h 54 | | February | Best time | 9 h 03 | | March | Possible | 11 h 24 | | April | Possible | 14 h 02 | | May | Best time | 16 h 23 | | June | Best time | 17 h 47 | | July | Best time | 17 h 11 | | August | Best time | 15 h 04 | | September | Best time | 12 h 28 | | October | Possible | 9 h 55 | | November | Better not | 7 h 31 | | December | Best time | 6 h 13 | In June there are 17 h 47 of daylight, and in December, 6 h 13. 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 Sweden in general, with its festivals and peak seasons, is in [its country guide](https://kokai.app/en/paises/europa/suecia/#cuando-ir). ## Before you go to Sweden To enter Sweden there are 6 things to sort out before you leave, starting with “Valid Spanish ID card (DNI) or passport”: they are all, with their deadlines, in [the Sweden checklist](https://kokai.app/en/paises/europa/suecia/#antes-de-salir). Currency: Swedish krona (SEK); plugs: Type C and F · 230 V · 50 Hz (the same as in Spain); emergencies: 112 · 1177 health advice line. 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 - [Marstrand Church](https://kokai.app/en/paises/europa/suecia/marstrands-kyrka/): Church of Sweden church building in Marstrand, Sweden · 246 m - [Inlands Bryggeri](https://kokai.app/en/paises/europa/suecia/inlands-bryggeri/): Brewery · 936 m - [Marstrands naturreservat](https://kokai.app/en/paises/europa/suecia/marstrands-naturreservat/): Protected area · 1.2 km - [Pater Noster](https://kokai.app/en/paises/europa/suecia/pater-noster-skargardens-naturreservat/): Nature reserve in Västra Götaland, Sweden · 6.4 km - [Tuveslätt](https://kokai.app/en/paises/europa/suecia/tuveslatts-naturreservat/): Nature reserve in Västra Götaland, Sweden · 6.7 km Distances are as the crow flies. Everything else is in [the Sweden guide](https://kokai.app/en/paises/europa/suecia/). ## More in Sweden: History - [Drottningholm Palace](https://kokai.app/en/paises/europa/suecia/drottningholm-palace/): royal palace in Ekerö Municipality, Sweden - [Birka](https://kokai.app/en/paises/europa/suecia/birka-and-hovgarden/): archaeological site on the island of Björkö in Sweden - [National Library of Sweden](https://kokai.app/en/paises/europa/suecia/national-library-of-sweden/): Sweden's national library - [Stockholm Palace](https://kokai.app/en/paises/europa/suecia/palacio-real-de-estocolmo/): official residence of the Swedish monarch - [Skogskyrkogården](https://kokai.app/en/paises/europa/suecia/skogskyrkogarden/): cemetery in Stockholm, Sweden - [Engelsberg Ironworks](https://kokai.app/en/paises/europa/suecia/engelsbergs-ironworks/) Every Sweden place under History, each with its season, is on [its page](https://kokai.app/en/paises/europa/suecia/historia/). ## Frequently asked questions ### What is Carlsten? It is a fortress in Marstrand, Sweden. It has articles in 12 Wikipedias, so it is not one of the busiest places in Sweden: one to enjoy at a calmer pace. ### When is the best time to visit Carlsten? December to February and May to September. In June there are 17 h 47 of daylight, and in December, 6 h 13. ### How do you get to Carlsten? The nearest main airport is Göteborg Landvetter Airport (GOT), 48 km as the crow flies. From there, [directions](https://www.google.com/maps/dir/?api=1&destination=57.886214%2C11.578684) opens the route on the map, and how to get around Sweden is explained in [its country guide](https://kokai.app/en/paises/europa/suecia/#moverse). ### How do I add it to my trip? With one tap. In Kokai it is already on the Sweden 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 [Marstrand Church](https://kokai.app/en/paises/europa/suecia/marstrands-kyrka/), [Inlands Bryggeri](https://kokai.app/en/paises/europa/suecia/inlands-bryggeri/), [Marstrands naturreservat](https://kokai.app/en/paises/europa/suecia/marstrands-naturreservat/). The rest is in [the Sweden guide](https://kokai.app/en/paises/europa/suecia/). Data from [OpenStreetMap](https://www.openstreetmap.org/relation/3027727), licensed under the ODbL, and from [Wikidata](https://www.wikidata.org/wiki/Q1408867), CC0. More about Carlsten on [Wikipedia](https://sv.wikipedia.org/wiki/Karlstens_f%C3%A4stning). Daylight hours are calculated from the latitude. More in [credits](https://kokai.app/en/aviso/#creditos).