The Dartmouth Commons
This park feels a lot like the Public Gardens, with the notable difference that you're actually allowed to walk on the grass. If you don't get over to this side of the bridge much, it's an easy leap by bus or ferry.
No longer reserved for dogs (thus reducing the risk of finding unexpected surprises in the grass), this park feels remote despite being on the peninsula and has great access to the water for a seaside picnic. If you want to get a dose of culture too, there's the Africville Museum on hand to enrich your knowledge of Canadian history and remind you that our poor city development decisions go way back.
Any school playground
After hours and on weekends these are often deserted, and though it may not be 100 percent kosher, they make a perfect spot for grown-ups to let loose too. How long has it been since you and your friends played Marco Polo on playground equipment? Too long.
The wharves at Bishop's Landing
Not suitable for a blanket spread, but it makes a great place to sit and eat ice cream while you creep richer people's fancy boats. Keep in mind that whether you dangle your feet in the water should depend on the date of your last tetanus shot.
The centre of the Agricola/Cunard roundabout
Just another way the city's investment in road planning is paying off. Guaranteed nobody will bother you here.