City National Bank Building, Bank building from 1947 in Downtown Houston, United States.

The City National Bank Building at 1001 McKinney Avenue is an 86.87-meter, 23-story Moderne office tower completed in 1949. Its top floors form the smallest tier, and each tier widens toward the base, which fills the lot; the McKinney Street side runs 250 feet from Main Street to Fannin Street, while the Main Street side has a narrow profile.

Alfred C. Finn designed the building for City National Bank in 1947, and it was completed in 1949 as the first tall office building erected in downtown Houston after World War II. It was added to the National Register of Historic Places on April 3, 2000. The bank descended from Guaranty Trust Company, founded by James Anderson Elkins, Sr. in 1924.

The building takes its name from City National Bank, which descended from the Guaranty Trust Company founded by James Anderson Elkins, Sr. in 1924. The bank occupied the ground-floor lobby for about a decade, while Corrigan's Jewelry leased the retail frontage and tenants such as Braniff, DuPont, Humble Oil, Monsanto and Phillips Petroleum took office space above.

The building connects to Houston's underground pedestrian network, making it accessible from neighboring structures without going outside. Modern elevator systems inside facilitate movement between the numerous floors.

The original bank hall rose through three floors with soaring ceilings that created an open, generous feeling in the space. A jewelry retailer occupied the ground-level commercial area when the building first opened.