The Highland Inn (1908–1957) was a year-round resort hotel built and operated by the Grand Trunk Railway (GTR), in Ontario’s Algonquin Provincial Park. It was located near the park offices on the northern edge of Cache Lake, and was a focal point for the park for many years. Wishing to return the park lands to a more natural state, the Inn was purchased by the Ontario Government in 1956 and removed. Today all that remains are traces of the concrete stairs and platform that met the CNR line, which was lifted after departure of the last train in 1959.

The Grand Trunk Railway was a railway system that operated in the Canadian provinces of Quebec and Ontario and in the American states of Connecticut, Maine, Michigan, Massachusetts, New Hampshire, and Vermont. The railway was operated from headquarters in Montreal, Quebec, with corporate headquarters in London, United Kingdom. It cost an estimated $160 million to build. The Grand Trunk, its subsidiaries, and the Canadian Government Railways were precursors of today's Canadian National Railway.