This one-room cabin is located adjacent to the Fort Rouillé Monument and the CNE Bandshell. It is not only the oldest building on the grounds, but the oldest building in Toronto. It was built by the Queen's York Rangers in 1794 on behalf of John Scadding, who served as clerk (essentially, an executive assistant) to the first lieutenant governor of Upper Canada, John Graves Simcoe. The original cabin was disassembled from its original site and rebuilt by the York Pioneers, along with an adjacent cabin made out of new logs, on the current site, just in time for the original Toronto Industrial Exhibition in 1879.