Picture a bright, sunny day, and a walk through a woodland, over a bridge where a creek bubbles below and the lofty trees dapple the light overhead. Beyond is a meadow, and as you follow a gravel path and turn up a gentle slope, an ensemble of solid, cubic architectural forms comes into view. The windowless volumes are crisp but seem rooted in the earth like ancient ruins, their slightly mottled pale gray walls of poured-concrete block softened by the swaying grasses and black-eyed Susans that crowd up to the building’s edges.