8 Insignia Tower Mexico City, Mexico
Insignia Tower (aka Torre Insignia) is a 25-floor, triangular skyscraper that was the second-tallest building in Mexico at the time of completion in 1962. Inaugurated in 1964, it was initially used by the administration of a local housing complex. It then became the headquarters of the National Bank of Public Works (aka Banobras) until it was vacated in 1985 due to an earthquake.
The building has sat empty since then. There have been a few attempts to renovate the dilapidated building, the most recent in 2011. Insignia Tower holds historical significance for the area and has a large carillon that was played daily while the building was in use. There is much interest in bringing the building back to relevance.