Some embodiments include an integrated structure having a vertical stack of alternating insulative levels and conductive levels. The conductive levels include primary regions of a first vertical thickness, and terminal projections of a second vertical thickness which is greater than the first vertical thickness. Charge-blocking material is adjacent the terminal projections. Charge-storage material is adjacent the charge-blocking material. Gate-dielectric material is adjacent the charge-storage material. Channel material is adjacent the gate-dielectric material. Some embodiments include NAND memory arrays. Some embodiments include methods of forming integrated structures.