Castle Junction, also known as the locale of Castle Mountain, is a highway junction where the north extent of British Columbia Highway 93 intersects with Alberta Highway 1 (the Trans-Canada Highway

Trans-Canada Highway

The Trans-Canada Highway is a federal-provincial highway system that joins the ten provinces of Canada. It is, along with the Trans-Siberian Highway and Australia's Highway 1, one of the world's longest national highways, with the main route spanning 8,030 km...

), the Bow River

Bow River

The Bow River is a river in the Canadian province of Alberta. It is a tributary of the South Saskatchewan River, and is considered the headwater of the Nelson River....

, the historic CPR

Canadian Pacific Railway

The Canadian Pacific Railway , formerly also known as CP Rail between 1968 and 1996, is a historic Canadian Class I railway founded in 1881 and now operated by Canadian Pacific Railway Limited, which began operations as legal owner in a corporate restructuring in 2001...

 rail line, and Highway 1A in Banff National Park

Banff National Park

Banff National Park is Canada's oldest national park, established in 1885 in the Rocky Mountains. The park, located 110–180 kilometres west of Calgary in the province of Alberta, encompasses of mountainous terrain, with numerous glaciers and ice fields, dense coniferous forest, and alpine...

, Alberta

Alberta

Alberta is a province of Canada. It had an estimated population of 3.7 million in 2010 making it the most populous of Canada's three prairie provinces...

. It is named after the nearby Castle Mountain

Castle Mountain

Castle Mountain is located within Banff National Park in the Canadian Rockies, approximately half-way between Banff and Lake Louise. While looking nearly impenetrable from the Trans-Canada Highway, the peak can be ascended from the backside on the northeastern slopes...

, clearly visible from the Junction.

A group of lodges and the Castle Mountain campground are located within a kilometre of the junction. The trailhead for Rockbound Lake is also nearby.

Nearby is the site of the notorious Castle Mountain Internment Camp

Castle Mountain Internment Camp

The Castle Mountain Internment Camp was the largest internment facility in the Canadian Rockies, housing several hundred prisoners at any one time...

 where people of Japanese descent were confined during WW II.