To get to Centre Island from Union Station in Toronto, you first need to head south to the Jack Layton Ferry Terminal, located at the foot of Bay Street and Queens Quay. You can reach the terminal by taking a short 10-minute walk south from Union Station or by catching the 509 or 510 streetcar from the underground Union station loop to the "Queens Quay Ferry Docks" stop. Once at the terminal, you must purchase a ticket for the Centre Island Ferry. The ferry ride itself takes about 15 minutes and offers stunning views of the Toronto skyline. It is highly recommended to buy your ferry tickets online in advance during the summer months to avoid long queues at the ticket booths.