Another reason why it is a special protein is that it was the first protein that was "solved." After years of work, John Kendrew and his team finally solved the structure of the protein and built a model. Below is the model and I have learned that you can visit it at Science Museum in London. Unfortunately, it looks disgusting. I wish they had chosen a better color and material to build the model.
And here is a model generated by PyMOL on my laptop. It looks cute now: