Fodor's Expert Review Smithsonian Marine Ecosystems Exhibit
Housed in the St. Lucie County Aquarium and run by the Smithsonian Institute, whose research facility next door is where scientists study local ecosystems (once-monthly tours are organized), this facility has a 3,000-gallon coral-reef tank, originally located in the National Museum of Natural History in Washington, D.C. The parklike setting, where children love to play, makes it an ideal picnic destination. Admission is free on the first Tuesday of every month.