The Tower City branch provides a variety of services, including traditional retail banking, investment products, mortgage lending, private banking, small business banking and commercial banking.

"You can make at least a thousand dollars a week more here than anywhere else in the country,"

Citigroup has long struggled to rein in expenses. Before the financial crisis, then-Chief Executive Charles Prince faced investor pressure over the bank's costs, which rose much faster than revenue.

While consumers may be racking up more debt, they are at least defaulting less frequently and getting better at making on-time monthly payments.