As you can also tell from the photo, the building now houses a Westin Hotel with B.A.N.K. restaurant and bar occupying the main lobby of the old bank. The restaurant preserves much of the space's beauty and grace and makes interesting use of the old vaults.
As for the bank itself, it's no longer with us. It was failing when it was acquired by Marquette Bank in 1982 in a sale assisted by the FDIC. At the time, Marquette Bank was owned by Carl Pohlad, whose family still owns the Minnesota Twins. Marquette was eventually sold to First Bank in 1993, which in turn was later merged into U.S. Bank.