| FirstBank Southwest Tower | |
|---|---|
The FirstBank Southwest Tower in downtown Amarillo. | |
| Former names | SPS Tower Team Bank building Bank One Center Chase Tower Amarillo Tower |
| General information | |
| Architectural style | Modernism |
| Location | 600 South Tyler Street[1],Amarillo, Texas, United States |
| Coordinates | 35°12′26″N101°50′20″W / 35.2073°N 101.8390°W /35.2073; -101.8390 |
| Completed | 1971 |
| Height | 374 ft (114 m) |
| Technical details | |
| Floor count | 31 |
American National Bank of Amarillo and SPS Tower | |
| NRHP reference No. | 100003493 |
| Added to NRHP | March 6, 2019 |
FirstBank Southwest Tower is a 374-foot (114 m), 31-story building located inAmarillo, Texas, United States. Formerly known asSPS Tower,Bank One Center,Chase Tower, andAmarillo Tower, it is the tallest building in Amarillo and theWest Texas region. The building used to be the home of the Amarillo branch of American National Bank. The building also housed the offices of the region's electric power service provider, Southwestern Public Service (which was later acquired byXcel Energy).[2]
The Tower has a striking resemblance to theOne Financial Plaza Building inFort Lauderdale, Florida. The First Bank Southwest Tower is only about three stories taller than its counterpart.

In October 2008, theWest Texas A&M University letters were installed on the First Bank Southwest Tower as part of the agreement to have university classes there.[3]
In 2018, Chase decided to close its downtown Amarillo branch in the building. By June 2018, FirstBank Southwest reached an agreement to locate a downtown branch there and receive naming rights on the building in the process.[4][5] The FDIC approved the application by October 2018, for FirstBank Southwest to have a branch in the building, and the bank plans to be operational there by the middle of 2019.[6] Work began in late March 2019 to place the letters for the logo sign for FirstBank Southwest at the top of the tower in three places. The process was scheduled to take around two weeks' time.[7]
The tower was added to the National Register of Historic Places on March 6, 2019.
Tenants at FirstBank Southwest Tower include FirstBank Southwest,Amarillo Globe-News, Cactus Feeders,[8] Tower Fitness, Tower Cafe, and the Amarillo Club, a members-only dining facility.[9]