Niagara Falls, ON
Distance from Toronto: 120km northeast; an hour-and-40-minute drive
Why you should go: Um, duh. It's quintessential road trip materiel, a budget honeymoon destination, and the favourite locale for low-cost bachelor parties. Plus, no matter how you look at it, the Falls themselves are pretty spectacular, whether seen from an observation deck or boat cruise. Casinos, golf courses, and the chance to visit nearby wineries round out the list of to-dos in the area.
Pro tip: Do the tourist thing, don the yellow rain slicker, and take the Journey Behind the Falls tour. You look silly, but it really is the best way to see Niagara Falls in all its glory.