20 Most Dangerous Buildings

Some buildings are marvels of engineering, while others hide risks that make them extremely dangerous to those inside or nearby. From unstable high-rises and structures left half-finished, to buildings weakened by design flaws, poor materials, or hazardous surroundings, these places reveal how quickly human ambition can turn into peril. In this list, we’ll explore 20 of the most dangerous buildings ever built—structures that stand as warnings of what can happen when safety takes a backseat to speed, cost, or ambition.