Cummer Museum of Art and Gardens in Jacksonville is currently offering half-off admission for adults, seniors, military, students, and children under 5 ($5 instead of $10 for adults, for example). The gardens are closed because of damage caused by Hurricane Irma. The art museum is still open. You can choose to pay full price, and if you do, half of the proceeds will be to restoring the gardens.
There are also free days during the week:
*College Students with ID free admission ever Tuesday through Friday, 10 a.m. to 4 p.m.
*Free admission for everyone, every Tuesday, 4 p.m. to 9 p.m
*Free admission for everyone the first Saturday of each month, 10 a.m. to 4 p.m.
Free admission for Bank of America and Merrill Lynch cardholders the first full weekend of each month, provided by Museums on Us.
*Free admission to military families Memorial Day through Labor Day