SkyDome opened in 1989 as the new home of Toronto's baseball and football teams. The city's basketball team played there from 1995 to 1999 while a new arena was being built downtown. The football team got the boot in 2015, leaving the baseball team as the facility's sole tenant. It's often called the Death Star.
The sweatshirt is great, but the image on the website needs to be updated. A short sleeved shirt is shown and I think that led to confusion with my initial order.