In Auckland, in the city center, you can find Albert Park. People usually go there during the weekend to relax a little bit, they bring a towel and stay there all afternoon. Great to read a book (super close to the library), to have quality time with significant other or just to absorb a good amount of sunshine.
When you’re travelling, if you need to rest your legs or eat something, I believe Albert Park is a great place to make a stop and restore your energies.
And if you’re a fan of Pokemon Go, you’ll probably enjoy stopping by! There’s a gym in the park and you can talk with other people who are playing Pokemon.