Cannon, Fredrikstad Fortress, Norway
The design incorporated Dutch plans, moats combined with earthworks, see http://www.visitnorway.com/en/where-to-go/east/fredrikstad/what-to-do-in-fredrikstad/attractions-in-fredrikstad/fredrikstad-fortress/
There is a drawbridge.
Munitions were kept underground to muffle the effect of explosions.
The town now is residential, with a variety of cultural and arts groups living and visiting there.
Find concerts, farm markets, art exhibits at Fredrikstad.
Royal lion at gate, Fredrikstad Norway
Cobbles are stronger than asphalt.
Unlike the US where a property owner can be sued if a visitor is injured, in Norway one is expected to exercise care and not that where there are no fences, one may indeed fall in.
Waterfront warehouse, fishing dock, wall, at Fredrikstad NO.