The idea of theater museum suggests abstract structural themes for artwork:
stage, 3 interacting active dimensions, enclosed space, narrative scenes of
sculptural elements, activities behind the scene, upstage/downstage, partially
blocked views, a focus on the stage, and so on. Theater museums are intensely
unflatlandly (at least if they're presenting plays rather than movies).

Here are Theater Museum 1 and Theater Museum 2, pieces that differ in
their vocabulary of elements but sit and pose together well in these photographs.

The stage name of Theater Museum 1 is It's More Complicated Than That.

The stage name of Theater Museum 2 is Linear Buddha, as perhaps
suggested by its 2 wooden vertical elements.

-- Edward Tufte