March 12-20, 2013 there was a tour on Sweden Coastal artillery of Cold War era organized by Lars A. Hansson (www.bunkertours.se, see: tour's page). All tour's sunjects are on the map.
I went from St.Petersburg to Helsinki by night bus and spent a day by walking on ice to some Cveaborg Fortress islands and then gone to Stokholm by night ferryboat where my adventures begun.
There is a preliminary photoreport about the event:
T-bana Centrale railwaystation at Stokholm. The train to Nyneshamn is on the photo.
Ferryboat to Landsort island.
Participants of the tour at the ferryboat...
120/62 ìì Bofors ERSTA at Landsort island.
Ammunition dump of 120 mm battery.
152 ìì Bofors at Landsort island.
Interiors of 152 mm turret.
Goes back to the mainland and...
...ice trip to Jarflotta island.
245 mm turret gun at Jarflotta island.
Breach of 245 mm gun at Jarflotta island.
Next move to Arholma island.
120 mm battery at Arholma island.
Interiors of 120 mm turret of Arholma battery.
Ammunition loading system.
Ammunition warehouse with shell's cases.
Central control post of the battery.
75 mm battery at Gavle.
In the search of new discoveries and adventures...
Gun cesemates of Gavle battery.
Hemsö island, Storråberget battery.
Interiors of twin 152 mm gun turret.
Rangefinder station at Kläffsön. Control post.
Residental area of Rangefinder station.
Medical unit at Storråberget battery.
Diesel generator of Storråberget battery.
Secret documents room.
75 mm m/57 turret of Havstoudd battery.
Interiors of 75 mm turret .
Underground gallery of Hemsö fortress.
Control post of 75 mm battery at Hemsö.
Command post of 75 mm battery.
Tour's participants at Hemsö island.
Gala dinner in the vaults of Hemsö fortress.
Way back to the mainland.
Stokholm by night.
Winter Sveaborg (Suomenlinna) Fortress (Finland).
In the Sveaborg vaults...
PS: undergraund passage from Lansi Mustosaari island to the mainland Helsinki.