3. Ronan Point Apartment Building

Location: London

Year of Fail: 1968

Built from pre-fabricated concrete panels held together by bolts, Ronan Point was such a large undertaking that quality control by the architects was almost nonexistent during construction. When an explosion in a single apartment caused an entire corner of the 22-floor building to topple like dominoes, it was found that water-damaged bolts and joints filled with newspaper, rather than concrete, caused the wall panels to crack and collapse. Miraculously, only four of the 260 people in the building were killed in this 1968 disaster.