Wearing a scarf can be a form of cultural or artistic expression. For the women who, for cultural and religious reasons are required to wear a scarf over their heads, this is the only form of creativity they have in fashion. It can be very beautiful. But that's doesn't mean other women don't wear scarves too. I have been known to wear some beautiful scarves on my head and it has no affiliation to culture or religion.
Designers like Fendi, Louis Vuitton, Chanel and Hermes are known for some of the beautiful patterns and colors in their scarves.