The causeway known as Calzada de Amador was constructed a century ago from nearly 3.5 million cubic feet of excavated material from the Panama Canal. It was built as a breakwater for ships awaiting entry as well as to connect Naos, Culebra, Perico, and Flamenco islands—and their U.S.-built fortifications defending the canal—to the mainland. Amador has been recently restored and is one of the best places to enjoy the sunset with an ocean view. One particularly nice approach is going out to Isla Flamenco and hitting one of its restaurant terraces overlooking the surf. There’s also a small shopping center there for duty-free purchases. Of course, if you’re looking for some open-air sun and fun, rent a bike at one of the stalls on shore, near the Figali Convention Center.