How to obtain the list of a project's levels?

Hello everybody.

I’m looking for a way to get a list, with all the levels of a Revit project.

My first idea was to get all elements of the project, get the level of each element and use a List.UniqueItems node, but I’m not sure it’s really optimized (especially for huge projetcs with thousands of elements).
Have you an idea of a less resources-hungry way to get this list ?

Thanks !

Element.Types select “Levels” and All Element of Type.


… Obviously.
Thank you very much, that’s exactly what I need !

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