36. The Hyatt Regency

Location: Kansas City, MO

Year of Fail: 1981

In the summer of 1981, 114 people were killed and 216 injured when two walkways suspended from the hotel ceiling fell onto a crowded tea ceremony taking place in the lobby below. A subtle but flawed design change during construction doubled the load on the fourth floor walkway, rendering the path unstable even without people present. The added weight of hotel patrons gathering to watch the tea ceremony beneath them caused the fourth floor walkway to collapse onto the second floor walkway. Both walkways then crashed to the lobby floor below. To make matters worse, falling debris severed the hotel’s water pipes flooding the lobby and putting those trapped at a high risk of drowning.