Comerica Bank Tower is a 60 story skyscraper that is currently the 49th tallest building in the United States and the third tallest building in Dallas. Completed in 1987, the tower was designed by architects John Burgee and Philip Johnson and contains 1,500,000 square feet of [downtown dallas office space] (http://www.thesquarefoot.com/dallas/office-space/downtown-dallas). It was the last high-rise to be completed in [downtown Dallas] (http://www.thesquarefoot.com/dallas/) in the 1980’s.
Construction of the tower began in 1985 and was built as the new Headquarters of MCorp Bank. The original plans called for several smaller [office buildings] (http://www.thesquarefoot.com/) along with a shopping center and hotel, but MCorp decided on a singular tower without any retail. Comerica Bank Tower went through a series of legal disputes after MCorp Bank collapsed and was dissolved by Bank One. The building went into foreclosure in 1991 and then again in 1995 before Crescent Real Estate Equities purchased it in 1997 for $238 million.
Comerica Bank moved its headquarters from Detroit, Michigan into the tower in 2007. The first five floors house a large banking and stock exchange hall with massive vaulted ceilings and a skylight. It’s design has been described as having an art nouveau style with glass flowing down the side setbacks of the tower giving the illusion of a waterfall. 
The tower is the central hub of the Dallas Pedestrian Network, which contains several retail centers underground.