If you want to spend some time outdoors on your visit to Dallas, the Arboretum is one of the best places to explore. The grounds are immaculately kept year round and the property looks over White Rock Lake. During the summer and fall, the Arboretum hosts concerts on the lawn. The events are bring-your-own food and refreshments and make for a perfect evening. Another great time of the year to visit is during the start of fall, when the grounds are transformed in to a harvest and pumpkin-themed paradise.