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Carlsten Fortress is located on the island of Marstrand, about 45 kilometers northwest of Gothenburg. The first way to get to Koön is by car, bus or boat. Since car traffic is prohibited on Marstrandsön, you can take the passenger ferry from Koön to Marstrandsön by car or bus. Koön is located 100-150 meters east of Marstrand and the ferry crossing only takes a couple of minutes.
directions
Driving a car
Directions from Gothenburg: Take the E6 towards Oslo. At Kungälv (approx. 20 km) take road 168 (signposted Marstrand) and follow this (approx. 25 km) to Marstrand-Koön.
Parking. At the entrance to Marstrand-Koön there are signs for several different parking lots. The principle is that the closer to the ferry terminal, the more expensive the fee. During the winter months, most parking lots are free – see instructions on site.
Travel by bus
Buses 302 and 312 run daily from the Nils Ericsson terminal at Gothenburg Central Station. Bus 312 is an express bus that takes about 55 minutes and bus 302 takes about 1 hour and 10 minutes as it also passes Kungälv. The express bus has most departures during the summer but also some departures in the winter. The buses have their terminus at Arvidsvik, on Koön only 50 meters from the ferry terminal. For times, prices, etc. visit www.vasttrafik.se or call customer service, tel 0771-41 43 00
Ferry Koön – Marstrandsön
The passenger ferry between Koön and Marstrand runs all day and has timetable 322. During the day it runs every 15 minutes and during the night it runs every half hour on call. Tickets can be purchased from the ticket machines at the kiosk/street kitchen next to the ferry terminal or inside the kiosk. The ticket only needs to be presented when traveling from Koön to Marstrand as the return from Marstrandsön to Koön is included in the ticket price. Travel time: about 2 minutes.
Prices and departure times for the ferry
Current prices and departure times can be found most easily on Västtrafik’s page about Marstrandsfärjan.
ATTENTION! If you have come by bus to Koön, the bus ticket is also valid for crossing to Marstrand Island. You do not need to buy a ferry ticket when traveling by bus.
How to get from the ferry to Carlsten Fortress on foot
Once you have crossed to the island by ferry, the easiest way is to turn right along the quay. After about 200 meters you turn left onto Kungsgatan. Then just follow this straight up until you reach the fortress. The last part of Kungsgatan is a steep hill. When you have climbed it, you are at point 1 on the map next door. Turn right and follow the road until you reach a gate marked 23 (no. 3 on the map). Inside this is the entrance to the brick house (no. 4).
