At www.jewishpress.com/news/israel/jerusalem/magnificent-remains-of-judaean… … the remains of a first temple period palace has been discovered under Jerusalem's promenade. These include carved stone which seem to have been buried purposely in order to avoid total destruction. They are made of a soft limestone with decorative carvings …
… in a style known as Proto Aeolian. It is thought they date to the reign of Hezekiah. They include window frames and balustrades, and columns in the Proto Aeolian style. The building itself was demolished, presumably during the Babylonian destruction of Jerusalem in 586BC. Hence, somebody had the presence of mind to hide these stone artifacts to avoid their demise, thus preserving them for the archaeologists. The Promenade dates from the British Mandate between WWI and WWII.