Lethbridge

Lethbridge lies amidst the prairie about where the front range disappears from the western horizon.  It's flat, except for the valley of the Oldman River on the west edge of town. The Oldman drains the eastern front of the Rockies in both Canada and the U.S., including Saint Mary Lake in Glacier National Park and Waterton Lake.  In eastern Alberta, the Oldman joins the Bow (from Banff and Calgary) to become the South Saskatchewan River which eventually flows to Hudsons Bay via the Nelson River.

The railroad spans the 300' deep canyon on a mile-long steel trestle built in 1909 - one of the longest and highest in the world.  The valley is mainly park space with a wonderful network of trails.