Charles Ellicott Commentary 2 Kings 21:18

"And Manasseh slept with his fathers, and was buried in the garden of his own house, in the garden of Uzza: and Amon his son reigned in his stead." — 2 Kings 21:18 (ASV)

In the garden of his own house, in the garden of Uzza. —His house was apparently not the royal palace built by Solomon, but another which Manasseh had built for himself. Thenius argues that the garden of Uzza lay in the Tyropœon, at the foot of the spur of Ophel. (Compare to 2 Samuel 6:8; 1 Chronicles 8:7; Ezra 2:49; Nehemiah 7:51).