The Arts District may provide some good indoor activity for you to hide away from the Dallas heat, especially in the summer months. Take advantage of these air-conditioned spaces as the temperatures can certainly climb above 100 degrees.
Although this place definitely does have a more narrow audience than somewhere with more beautiful natural sights, it can still be the perfect neighborhood for some people. One person who may love this area is someone who works hard in downtown Dallas and holds their job as a high priority. This neighborhood would give them the closeness to be able to commute to work with ease while still providing a pleasant suburban atmosphere.
Another great choice is the more traditional Griggs Park. This tranquil memorial park is full of beautiful green fields and plenty of walking trails. Belo Garden is probably the most unique greenery you can find in the area with a huge garden featuring native plants and a beautiful interactive water feature.
Finally, for those who really enjoy the city and want a park representative of its modern style flare, Lubben Plaza Park is the place to go.