When in Toronto, seniors can expect to receive discounts on the TTC (subway and bus), and on many (but not all) admissions to attractions. Keep in mind that it is usually necessary to show photo identification when purchasing discounted tickets or admissions. Members of CARP (Canadian Association of Retired Persons; tel. 416/363-8748; www.carp.ca) or AARP (the American analog; tel. 888/687-2277; www.aarp.org), can get discounts on hotels, airfares, and car rentals. Anyone over 50 can join.
Frommers.com offers more information and resources on travel for seniors.