It seems to be a common human failing to reveal too much about ourselves, even to people we do not know very well. This is a mistake made by King Hezekiah when he was visited by Merodach-baladan, king of Babylon.
And Hezekiah had very great riches and honor, and he made for himself treasuries for silver, for gold, for precious stones, for spices, for shields, and for all kinds of costly vessels; storehouses also for the yield of grain, wine, and oil; and stalls for all kinds of cattle, and sheepfolds. He likewise provided cities for himself, and flocks and herds in abundance, for God had given him very great possessions. (2 Chronicles 32:27-29 ESV)
I would think that Hezekiah would have shown the Babylonian monarch his gold and silver treasures, but he may have shown him some of the storehouses where various significant goods were stored. We know that Lachish was a place for the storage of wheat and oil.
Three contiguous storehouse units to the right of the gate were excavated by archaeologists under the direction of Prof. Yohanan Aharoni at Beersheba. Aharoni says,
At Beer-sheba one found many storage vessels in every one of the two side chambers of each storehouse and also a Hebrew ostracon recording the shipment of quantities of a certain commodity (wine?) from two places near Beersheba, (El)tolad and (Beth-)Jamam (Joshua 15:26, 30; 19:4; 1 Chron. 4:29. (The Archaeology of the Land of Israel, p. 223)
These storehouses are dated to the 8th century B.C., the time of Isaiah and Hezekiah.