When completed in 1892, the Yttergrund lighthouse was the tallest in Finland. The buildings housing the lighthouse keepers are from the same year.
Close to the buildings, there were also small animal shelters and cultivated parcels as well as fences built of the stones removed when the land was cleared. 
The lighthouse was automated in 1963 and the buildings were left empty. The Yttergrund lighthouse is now Finland’s third tallest lighthouse after the lighthouses of Bengtskär and Suomenlinna. 
Metsähallitus now owns the lighthouse keepers’ buildings, and Solrutten is responsible for their maintenance.


Yttergrund, Sideby, Kristinestad, Euref-Fin (~ WGS84) lat:  61°58.831 ' lon: 21° 17,676 ' ETRS-TM35FIN: N: 6885151 E: 201242

Connections and Maps

  • The closest harbour accessible by car is : Kilhamn, Kiili 62°02,3’ P, 21°18,7’
  • Topographic map nr 1241 03
  • Topographic map nr 1241 02
  • Nautical chart 957 Merenkurkku, 1:250 000,

By boat



 Other services

  • Campfire site
  • Dry toilet 

Waste management




112 Emergency Number

If you have an emergency during your trip, such as getting lost, injured or finding a wildfire, call 112. Read more detailed emergency instructions.

Download the 112 Finland application ( to your phone. When an emergency call is made through the 112 Finland application, the emergency centre attendant is automatically informed of the caller's location.

It is recommended to keep the mobile phone warm and to bring extra food and water with you. There are many excursion locations with no mobile coverage and some mobile phones does not work in sub-zero temperatures, that is why it is always a good idea to let someone know about your itinerary and timetable.

Outdoor Etiquette

A cartoon picture of a family walking on a summer path.

1. Respect nature.

2. Mainly use marked trails.

3. Camp only where it is allowed.

4. Light your campfire only where it is allowed.

5. Do not litter.

Read more