From The TimeSplitters Wiki

Bank
Size	Medium
Location	City Bank with street outside
Climate	Sunny
Unlockable	"Chemical Plant" on Normal
Recommended Bots	N/A
Recommended Weapons	N/A

Bank is a sort of smaller version of Streets, with a Bank at one end. The Bank itself includes a main lobby with Cashier desk and past that is another room then the stairs downstairs into the Vault. Outside the Bank's entrance you can go up some stairs to gain access to a platform for sniping.