building, structure, construction, edifice

dangerous; risky

danger

decay, deterioration, disintegration / collapse

to collapse / to decay, to deteriorate, to disintegrate

dangerous body of water / (figuratively) (of politics or economic) unsuitable status

"collapse of the tear glands": (informal, originally Internet slang) violent crying from sadness

"collapse of the abdominal muscles": (informal, originally Internet slang) violent laughing from hilarity

the Gestaltzerfall phenomenon, gestalt decomposition (where something seems to lose its meaning after long exposure)