Main street, hot springs and upper hot springs at Banff, Alberta.

Main street, hot springs and upper hot springs at Banff, Alberta.

Main street, hot springs and upper hot springs at Banff, Alberta.

Main street, hot springs and upper hot springs at Banff, Alberta.

Views of Banff, Bow River Valley and gondola station from atop Sulphur Mountain; Banff, Alberta, Canada.

Views of Banff, Bow River Valley and gondola station from atop Sulphur Mountain; Banff, Alberta, Canada.

Views of Banff, Bow River Valley and gondola station from atop Sulphur Mountain; Banff, Alberta, Canada.

Views of Banff, Bow River Valley and gondola station from atop Sulphur Mountain; Banff, Alberta, Canada.

Views from boardwalk include signage and friendly wildlife atop Sulphur Mountain; Banff, Alberta, Canada.

Views from boardwalk include signage and friendly wildlife atop Sulphur Mountain; Banff, Alberta, Canada.

Views from boardwalk include signage and friendly wildlife atop Sulphur Mountain; Banff, Alberta, Canada.

Views from boardwalk include signage and friendly wildlife atop Sulphur Mountain; Banff, Alberta, Canada.

Views from boardwalk include signage and friendly wildlife atop Sulphur Mountain; Banff, Alberta, Canada.

Views from boardwalk include signage and friendly wildlife atop Sulphur Mountain; Banff, Alberta, Canada.

Views from boardwalk include signage and friendly wildlife atop Sulphur Mountain; Banff, Alberta, Canada.

Mountains, forests and rainbows line Highway One and Icefield Parkway in Banff National Park; Alberta, Canada.

Mountains, forests and rainbows line Highway One and Icefield Parkway in Banff National Park; Alberta, Canada.

Mountains, forests and rainbows line Highway One and Icefield Parkway in Banff National Park; Alberta, Canada.

Bow River, mountain lakes, and glacial lakes and rivers of Banff National Park in the Candadian Rockies of Alberta, Canada.

Bow River, mountain lakes, and glacial lakes and rivers of Banff National Park in the Candadian Rockies of Alberta, Canada.

Bow River, mountain lakes, and glacial lakes and rivers of Banff National Park in the Candadian Rockies of Alberta, Canada.

Bow River, mountain lakes, and glacial lakes and rivers of Banff National Park in the Candadian Rockies of Alberta, Canada.

Jagged peaks, alpine glaciers and turquoise waters paint magnificent scenes at Lake Louise, Banff National Park; Alberta, Canada.

Jagged peaks, alpine glaciers and turquoise waters paint magnificent scenes at Lake Louise, Banff National Park; Alberta, Canada.

Jagged peaks, alpine glaciers and turquoise waters paint magnificent scenes at Lake Louise, Banff National Park; Alberta, Canada.

Jagged peaks, alpine glaciers and turquoise waters paint magnificent scenes at Lake Louise, Banff National Park; Alberta, Canada.

Jagged peaks, alpine glaciers and turquoise waters paint magnificent scenes at Lake Louise, Banff National Park; Alberta, Canada.

Jagged peaks, alpine glaciers and turquoise waters paint magnificent scenes at Lake Louise, Banff National Park; Alberta, Canada.

Huge all-terrain busses are dwarfed amid vast glacial panorama of the Columbia Icefields; Jasper National Park, Alberta, Canada.

Huge all-terrain busses are dwarfed amid vast glacial panorama of the Columbia Icefields; Jasper National Park, Alberta, Canada.

Huge all-terrain busses are dwarfed amid vast glacial panorama of the Columbia Icefields; Jasper National Park, Alberta, Canada.

Huge all-terrain busses are dwarfed amid vast glacial panorama of the Columbia Icefields; Jasper National Park, Alberta, Canada.

Huge all-terrain busses are dwarfed amid vast glacial panorama of the Columbia Icefields; Jasper National Park, Alberta, Canada.

Huge all-terrain busses are dwarfed amid vast glacial panorama of the Columbia Icefields; Jasper National Park, Alberta, Canada.

Huge all-terrain busses are dwarfed amid vast glacial panorama of the Columbia Icefields; Jasper National Park, Alberta, Canada.

Huge all-terrain busses are dwarfed amid vast glacial panorama of the Columbia Icefields; Jasper National Park, Alberta, Canada.

Huge all-terrain busses are dwarfed amid vast glacial panorama of the Columbia Icefields; Jasper National Park, Alberta, Canada.

Mule deer, ground squirrels and lynx are among the plentiful wildlife of the Bow River Valley; Banff National Park, Alberta, Canada.

Mule deer, ground squirrels and lynx are among the plentiful wildlife of the Bow River Valley; Banff National Park, Alberta, Canada.

Mule deer, ground squirrels and lynx are among the plentiful wildlife of the Bow River Valley; Banff National Park, Alberta, Canada.

Mule deer, ground squirrels and lynx are among the plentiful wildlife of the Bow River Valley; Banff National Park, Alberta, Canada.

Mule deer, ground squirrels and lynx are among the plentiful wildlife of the Bow River Valley; Banff National Park, Alberta, Canada.

Mule deer, ground squirrels and lynx are among the plentiful wildlife of the Bow River Valley; Banff National Park, Alberta, Canada.

Female American elk grazes in woodland pasture in Banff National Park; Alberta, Canada.

Female American elk grazes in woodland pasture in Banff National Park; Alberta, Canada.

Female American elk grazes in woodland pasture in Banff National Park; Alberta, Canada.

Indian paintbrush, mountain avens and other wildflowers blossom during short summer of Canadian Rockies; Banff National Park, Alberta, Canada.

Indian paintbrush, mountain avens and other wildflowers blossom during short summer of Canadian Rockies; Banff National Park, Alberta, Canada.

Indian paintbrush, mountain avens and other wildflowers blossom during short summer of Canadian Rockies; Banff National Park, Alberta, Canada.

Indian paintbrush, mountain avens and other wildflowers blossom during short summer of Canadian Rockies; Banff National Park, Alberta, Canada.

Indian paintbrush, mountain avens and other wildflowers blossom during short summer of Canadian Rockies; Banff National Park, Alberta, Canada.