Pick up your car from SIXT and explore sites in Addison like the Mary Kay Museum and the Cavanaugh Flight Museum. There are several other art and history museums nearby to visit including the Dallas Museum of Art, Perot Museum of Nature and Science, and the George W. Bush Presidential Center. In your rental car, you can also drive to the Dallas Arboretum, the Dallas World Aquarium and the Dealey Plaza National Historic Landmark.