6. Rio de Janeiro Building Collapse
On January 25, 2012, three office buildings collapsed in Rio de Janeiro killing 17 people. The buildings were part of the Vieira Fazenda office block and they were 22-storey, 23-storey, and 6-storey high. It is believed that the reason for collapsing of the second building is structural failure. Regulators say that there were no construction permits for the building.
