I find that the Canada Science and Technology Museum's "Quantum: The Exhibition" is quite well done. I would like to make one suggestion for improvement.
Quantum tunnelling is depicted to occur at the widest part of the energy curve in an over-simplified model of a hole through the bottom of a mountain (which seems to have originated at the Max Planck Institute of Quantum Optics).
Since quantum tunnelling occurs where the energy gap is narrow, I believe that it can be better explained not by an over-simplified model of a hole through the bottom of a mountain but a more realistic P-N junction as follows.
