12 He pulled down the altars the kings of Judah had erected on the roof near the upper room of Ahaz, and the altars Manasseh had built in the two courts of the temple of the LORD. He removed them from there, smashed them to pieces and threw the rubble into the Kidron Valley.

Read 2 Kings 23:12 Using Other Translations

And the altars that were on the top of the upper chamber of Ahaz, which the kings of Judah had made, and the altars which Manasseh had made in the two courts of the house of the LORD, did the king beat down, and brake them down from thence, and cast the dust of them into the brook Kidron.
And the altars on the roof of the upper chamber of Ahaz, which the kings of Judah had made, and the altars that Manasseh had made in the two courts of the house of the LORD, he pulled down and broke in pieces and cast the dust of them into the brook Kidron.
Josiah tore down the altars that the kings of Judah had built on the palace roof above the upper room of Ahaz. The king destroyed the altars that Manasseh had built in the two courtyards of the LORD ’s Temple. He smashed them to bits and scattered the pieces in the Kidron Valley.