I love the Lady Bird Johnson Wildflower Center; I think it's a really special place. The grounds themselves are lovely--there are calm pools of water, bubbling brooks, and beautiful architecture and sculptures. There are loads of native plants and wildflowers in the gardens. I also recommend going for a walk in one of the trails that are on either side of the main campus of the Wildflower Center--you will feel like you are really out in the Hill Country. The admission is a little pricey at $8 per adult, but I think the overall ambiance makes it worth it. They also have a cute gift shop and lovely little cafe.
If you own or manage Lady Bird Johnson Wildflower Center, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.