One of the best and most authentic 'westerns' was "McCabe and Mrs. Miller" starring Warren Beatty and Julie Christie. Possibly one of the best films of Beatty's career.
It's the story of a mining town and the characters typical of the boom town genre. It was filmed in British Columbia on Cypress Mountain and the town of Squamish.
McCabe is a tin horn gambler who sees the need for a bordello and hires Mrs. Miller as the Madam. Unfortunately for him, he falls in love with her. He refuses to sell out his interests to a baddy, appeals to authorities for help and ends up having to deal with some hired guns on his own.
One of the best things about the movie is the music; songs by Leonard Chen, another Canadian.