If you have kids then there are plenty of activities and attractions that are designed for families. From Austin Aquarium to getting close to nature in the sunshine at McKinney Falls State Park, Mount Bonnell, and Lady Bird Lake. You could also pay a visit to Austin Nature & Science Center, especially if you choose to go to Zilker Metropolitan Park. There is also Austin Zoo, Thinkery for science adventures, and the Museum of Ice Cream at The Domain.  There is the largest bookstore in Texas in the form of BookPeople, Peter Pan Mini Golf, and Mount Playmore. Finally, Mayfield Park and Preserve for a picnic amidst the gardens or ZACH Theatre if you have kids who are interested in being creative.