Dioramas, documents and video trace the history of the Panama Canal in the Panama Interoceanic Canal Museum, housed in an elegant building that was once headquarters for the 19th century French canal company. All signage (and website) in Spanish but English audio guide available at $5. Its gift shop is worth a visit.Adults, $2; children, $75. Hours: 9:30 a.m. to 5 p.m. Tuesday through Sunday.