It costs CA$1 billion and touts 328,000 sq. The company’s Great Canadian Casino Resort Toronto is the newest and largest casino resort in the country. For the special occasion, Great Canadian Entertainment has invited three-time GRAMMY® Award winner Gwen Stefani and five-time CMA Male Vocalist of the Year and ACM Award winner Blake Shelton. Great Canadian Casino Resort Toronto may has started work in June 2023 but the country’s largest casino resort will celebrate its grand opening in May 2024.