The ReadVTK.jl package, mainly written by Michael Schlottke-Lakemper and the Trixi authors, may be used to read VTK files.
Note that ReadVTK.jl is specifically meant for reading VTK XML files generated by WriteVTK.jl, and may not be able to read VTK files coming from other sources.
See the ReadVTK.jl documentation for details on what can and cannot be done with it.