Security Trust and Savings (c. 1956; demolished)
Billings, MontanaDesigned by the Bank Building & Equipment Corporation, this three-story structure was reported to be the most modern bank in Montana when it was completed. It was built with expansion in mind, allowing elevators and HVAC systems to be added onto up to ten stories in the future. Security Trust and Savings Bank occupied the first and second floors while additional space was built to be leased.
The exterior finish of the building was granite and brick on the ground floor and Indiana limestone on the second and third stories. The new building facilitated the move of Security Trust and Savings from the building they had occupied since 1920 and had expanded in 1930 and 1948 to accommodate growth. However, after First Interstate Bank acquired Security Trust and Savings in 1971, they replaced the c. 1956 structure with the current First Interstate Bank Building, which is the tallest building in the state of Montana.