Toronto:
Places to visit/things to do:
Go grab a latte/pint in the old Distillery District - historical (Victorian era) entertainment district - full of cafe's and art gallerys - and is right downtown.
http://en.wikipedia.org/wiki/Distillery_District
The Ontario Science Centre - a lot of fun and very interactive!
http://www.ontariosciencecentre.ca/
Places to drink - Horse Shoe Tavern ( "rock and roll" flavored pub - fantastic venue for live music too-
370 Queen St West (right by Queen and Spedina) - this is right in the city's entertainment district: tons of restaurants, pubs, clubs and theaters in this area.
Take the Island Ferry and go have a picnic on the Toronto Islands
http://www.toronto.ca/parks/island/
Hockey Hall of Fame (if you even have a passing interest in the sport, it's worth seeing).
http://www.hhof.com/
Royal Ontario Museum - (if you like museum's and historical things, check this out).
http://www.rom.on.ca/en