Pendant down lights
Simplest solution that makes sense? Wall sconces. Then pendants and then cove lighting. Lamps would be a shame…
Star field fiber optic ceiling with a dark blue paint, crown molding with recessed 4500k warm white lighting strips and a couple cool chandeliers to be used when the stars aren’t.
Torches
with this: https://arch.flosusa.com/wall-ceiling/thin-led/thin-led/
or this: https://www.bega-us.com/categories/exterior/wall/directed-light-110058/33361
Incandescent lights
I’d choose upward projecting sconces to highlight the arched ceiling.
Indirect lighting towards the ceiling. It will create pleasant and soft lighting towards people walking through the halls.
Wall sconces, custom ones
Many good ideas in here so far. I’ll add something unique & fun, not already mentioned.
This is a bit out there, but here is a tunnel i really liked from neuschwanstein castle
The colors chosen is too vibrant you can choose between any 2 colors