.Originally built in the 1480s, the first unnamed tower performed strictly defensive functions. In 1547, the tower was destroyed by fire after the gunpowder stored there exploded, and was rebuilt in the 17th century. In 1770, the tower was taken apart to clear the site for the Kremlin Palace. After the construction of the palace ended, the tower was rebuilt in 1783, The second unnamed tower was built in the mid 1500s and served only defensive functions.