Thorold is a historic city in Ontario, Canada, known for its location on the Niagara Escarpment and as the site of the Welland Canal. The canal's Lock 7 and the Twin Flight Locks are notable features. Thorold boasts landmarks like the Chestnut Hall, The Old Fire Hall, and DeCew House, which is linked to the War of 1812 and the heroine Laura Secord. The city's growth was influenced by the canal, and it became incorporated in 1975. Today, Thorold offers a mix of cultural events, parks like the Mel Swart Lake Gibson Conservation Park, and a vibrant community life.