The Castle by Raylyn Moore (F&SF, August 1976) opens with Beryl the narrator being woken by her husband Miles, who has just had a nightmare where he was attacked by children. After Miles tells her about the experience he goes back to sleep, but she cannot. She thinks about various matters, during which we learn (a) that their house is a part-time toy museum which houses their huge collection and is open to occasional visitors, (b) Miles is Beryl’s second husband, and (c) he is building a huge play fort in the back garden overlooking the gully at the edge of their property. This latter venture does not proceed smoothly:
The first time the children had attacked the castle was before it was quite finished. Miles had left it late one afternoon with the mortar wet and returned in the morning to find the stones prized out of place. It looked as if a heavy pinch bar had been used. “I can scarcely believe it was children,” Beryl had said. “Think of the strength it must have taken.”
“Which is why I’m sure it was children,” Miles insisted. “They’re all just bubbling over with misdirected energy, aren’t they? And if they’re determined enough, they can do anything.”
[. . .]
The next time, the vandals had somehow sheared off the towers of the completed citadel, and once they had blasted a hole under the front wall with some explosive, presumably dynamite, though it didn’t make sense that children should have access to dynamite. (The Hullibargers had been out the evening it happened, and so had heard no sound.) p. 101
Most of rest the story concerns their otherwise idyllic life (neither seems to work and they do as they wish), but one action after another subtly portrays Miles as a self-centred man-child (earlier in the story Beryl says, “There’s an old wives’ tale that all American men are really little boys in wolf’s clothing”). This is finally made explicit in the last scene (spoiler), where the couple come home to find two children/intruders in the castle and Miles agrees to fight them for it:
He plunged up the slope ready for battle, and the two emerged from behind the stone kremlin to meet him as agreed. For a long time she remained frozen near the bottom of the hill, watching what was happening simply because she couldn’t make herself stop watching. It went on for a long time. They fought desperately, as if for their lives, kicking, gouging, smashing.
And after a while she had to admit that of the three little boys, all of a size, struggling fiercely on the leaf-covered slope, she could no longer tell, through the lowering dusk, which was Miles. p. 108
I think this is really a slightly surreal mainstream story rather than a fantasy (you would have to squint to see it as the latter), but I enjoyed its slow burn descriptive passages and quirkiness.
*** (Good). 6,050 words. Story link.