The Delaware Children's Museum, if hosting Grandparents' Week.
Through March 25, 2012, grandparents can get free admission to the museum with a paid child's admission.
Visitors can enjoy special hands-on, multi-generational programs that focus on healthy habits related to nutrition and exercise, including: "Youthful Yoga" (grandparent parent-grandchild yoga), "Know Your Roots" (planting herb seeds together), "Stuffeenatomy," (discovering circulatory and respiratory systems with really tall anatomy doll), "Shape Up!" (a giant 3-D "twist" on the classic "right-foot-on-red, left-arm-on-green" game), and more. For a complete schedule, click here.
The museum is located at 550 Justison Street, in Wilmington, Delaware, and it's open from 9:00 a.m. until 4:30 p.m. every day.