Leslie D.
Yelp
This is a very nice, large, outdoor grassy event space in Las Colinas, right next to Lake Carolyn. It is accessible via the walking trail around Lake Carolyn or by car. You can pay $10 to park in a nearby parking garage.
We visited for the Total Solar Eclipse. There were food trucks, port-a-potties and other vendors. Beautiful view of the lake and plenty of room to set up our blanket and chairs to enjoy the day.