Located in the historic 1938 city water plant, Imaginarium features interactive exhibits that explore physics, meteorology, paleontology, ecology and zoology. It also houses a 180,000-gallon/681,374-liter freshwater lagoon. Monday-Saturday 10 am-5 pm, Sunday noon-5 pm. US$5 for children ages 3-12 when accompanied by an adult, US$8 ages 13 and up, US$7 seniors. 2000 Cranford Ave., Fort Myers. Phone 239-337-3332. http://www.cityftmyers.com/imaginarium/index.aspx.