'Treasuries' in the Bible

Then Darius the king made a decree, and they sought in the house of the books of the treasuries placed there in Babylon,

I, Artaxerxes, in my capacity as king, hereby decree to all royal treasuries beyond the Euphrates River that whatever Ezra the priest-scribe of the Law of the God of Heaven, may require of you are to be performed with all due diligence,