We just finished our unit study on flowering plants so we cashed in a groupon to the Lady Bird Johnson Wildflower Center. The grounds are exquisite and very well laid out. The kids enjoy documenting flowers and identifying plants we had been studying. I am glad we had a groupon b/c it is a very pricy visit for a family of 6. The kids did great, but it was probably a one-time visit for us, at least until the boys are studying botany.