The US Bank Plaza is a skyscraper located in Boise, Idaho, and is the tallest building in the state. Completed in 1978 and renovated in 2004, it rises 267 feet (81 m) spanning 20 floors.
Originally "Idaho First Plaza," the building was the headquarters of the Idaho First National Bank, which was founded in 1867. Following acquisitions in neighboring states, IFNB was renamed West One Bank in 1989, and was acquired by U.S. Bank of Portland in 1995.
In 2000, the building was purchased by the property development firm Unico.