# RSA Trustmark Building

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The **RSA Trustmark Building**, originally the **First National Bank Building**, is a 34-story, 424-foot (129-metre) [International Style](/source/International_style_(architecture)) [office tower](/source/Office_tower) located in downtown [Mobile, Alabama](/source/Mobile,_Alabama).[2] Most recently known as the **AmSouth Bank Building**, it had been named in honor of its largest tenant until 2006, [AmSouth Bancorporation](/source/AmSouth_Bancorporation). It was renamed the **GM Building** by its new owner, [Retirement Systems of Alabama](/source/Retirement_Systems_of_Alabama), in 2009.[4] Following a [lease](/source/Lease) agreement with BancTrust Financial Group and its [community bank](/source/Community_bank) subsidiary, BankTrust, it was renamed again, this time to the **RSA–BankTrust Building**. BancTrust Financial Group was purchased in 2013 by [Trustmark Corporation](/source/Trustmark_Bank), a Mississippi-based financial institution.[5] The building officially became the RSA Trustmark Building. Trustmark occupies 72,000 square feet (6,700 m2) of the tower, including the lobby floor and floors 25 through 31.[6]

## History

Both the original First National Bank building (built 1913) and the three-story [Neo-Renaissance](/source/Neo-Renaissance) style U.S. Customs House (built 1853) were demolished in 1963 to clear the site for the new building.[7] The office tower was completed in 1965 and was the tallest building in Alabama from that time until 1986, when it was surpassed by the [SouthTrust Tower](/source/Shipt_Tower) in [Birmingham](/source/Birmingham,_Alabama).[8] It remained the tallest building in Mobile until the completion of the [RSA Battle House Tower](/source/RSA_Battle_House_Tower) in 2007.[2] It was temporarily the 2nd-tallest building in Mobile and the 4th-tallest building in Alabama for roughly a year until renovation of the [Renaissance Hotel](/source/Renaissance_Hotel) was completed in 2008 with the addition of a spire, which raised that building's height to 536 feet (136 m) from its previous height of 277 feet (84 m).

The building was acquired by Retirement Systems of Alabama in February 2009 and subsequently renamed. Plans for an interior and exterior renovation were announced in November 2009. The architectural firm of Goodwyn, Mills & Cawood performed the design and engineering work. The plans called for upgrading the interior office space from [Class C](/source/Class_C_office_space) to [Class B](/source/Class_B_office_space). Exterior changes included replacing all windows with longer, mirror-tinted versions.[4] The renovations were completed by March 2011.[6] The tower also features a restaurant (Dauphin's) on the 34th floor that offers panoramic views of the Mobile area.

## See also

- [List of tallest buildings in Mobile, Alabama](/source/List_of_tallest_buildings_in_Mobile,_Alabama)

## References

1. ["RSA–BankTrust Building"](http://www.skyscrapercenter.com/building/rsandashbanktrust-building/9506). *Skyscraper Center*. CTBUH. Retrieved 2017-09-07.

1. ["AmSouth Bank Building, Mobile"](https://web.archive.org/web/20070220045051/http://www.emporis.com/en/wm/bu/?id=amsouthbankbuilding-mobile-al-usa). *Emporis*. Archived from [the original](http://www.emporis.com/en/wm/bu?id=amsouthbankbuilding-mobile-al-usa) on February 20, 2007. Retrieved 2008-10-18.

1. ["Property Profile: AmSouth Bank Building"](http://www.johntoomeycompany.com/). *John Toomey & Company*. Retrieved 2008-10-18.

1. Jumper, Kathy (2009-11-08). ["Carnival atmosphere: Former AmSouth building updating with Mardi Gras theme"](http://blog.al.com/live/2009/11/carnival_atmosphere_former_ams.html). *Press Register*. AL.com. Retrieved 2009-11-08.

1. ["BancTrust Financial Group, Inc. and the Retirement Systems of Alabama Announce Lease Agreement for New RSA-BankTrust Building"](http://www.tradingmarkets.com/news/press-release/btfg_banctrust-financial-group-inc-and-the-retirement-systems-of-alabama-announce-lease-agreement-for-n-1132167.html). *TradingMarkets.com*. Retrieved 2010-08-25.

1. Jumper, Kathy (2010-08-25). ["AmSouth building becomes the RSA-BankTrust building today"](http://blog.al.com/live/2010/08/amsouth_building_becomes_the_r.html). *Press Register*. AL.com. Retrieved 2010-08-25.

1. Gamble, Robert (1990). *Historic architecture in Alabama: a guide to styles and types, 1810-1930*. Tuscaloosa, Alabama: The University of Alabama Press. p. 102. ISBN 0-8173-1134-3.

1. Kilpatrick, Andrew (September 25, 1985). ["With one floor to go, SouthTrust Tower offers a view from the top of Alabama"](https://www.newspapers.com/clip/106888883/with-one-floor-to-go-southtrust-tower-o/). *Birmingham Post-Herald*. Retrieved August 3, 2022. – via [Newspapers.com](/source/Newspapers.com)

## External links

- [RSA Trustmark Building at Emporis](https://web.archive.org/web/20070220045051/http://www.emporis.com/en/wm/bu/?id=amsouthbankbuilding-mobile-al-usa)

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Adapted from the Wikipedia article [RSA Trustmark Building](https://en.wikipedia.org/wiki/RSA_Trustmark_Building) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/RSA_Trustmark_Building?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.