Introduction -- Provenance and object history -- The block and its decoration -- The Aten cartouches and epithets -- Architectural inlay -- Reconstruction of the Meritaten Sunshade chapel -- The chapel of Meritaten and the Amarna period Sunshades -- The House-of-Waenre -- A Heliopolitan Horizon-of-the-Aten? -- Damnatio memoriae -- Ramesside reuse at Heliopolis -- Reuse of the Meritaten sunshade block in Islamic Cairo -- Conclusions