The Miraflores Locks consume 52 million gallons of fresh water with every paired transit, dumping it into the Pacific and beginning the cycle again. Completed in 1914 as the southern terminus of the American canal project, the two-lane chamber system lifts vessels 54 feet in three sequential steps, equalizing pressure through culverts bored directly into the concrete walls. Engineers designed the original lock gates to swing on hinges as tall as a seven-story building, each leaf weighing 745 tons yet balanced so precisely that a 40-horsepower motor can open them in under two minutes. The Miraflores Visitor Center, opened in 2000 and expanded in 2019, transformed what had been a restricted military zone into the canal's most-visited public observation point. Four open-air terraces offer sightlines down the chamber axis, positioning visitors 60 feet above the lock floor as neo-Panamax container ships, bulk carriers, and LNG tankers inch forward under the guidance of electric locomotives. A dedicated IMAX theater screens a 40-minute documentary on the canal's construction, narrated in English and Spanish, that compresses a decade of excavation, disease, and political maneuvering into a single sitting. The site's four-story museum traces the waterway's dual origin: the failed French attempt under Ferdinand de Lesseps, which buried 22,000 workers in the jungle between 1881 and 1889, and the American effort that followed, completing the cut through the Continental Divide in 1914 at a cost of $375 million. Dioramas reconstruct the Culebra Cut's steam-shovel operations, where 102 Bucyrus shovels excavated 96 million cubic yards of earth. Archival photographs document the arrival of West Indian laborers, the construction of Gatun Dam, and the flooding of the Chagres River valley to create Gatun Lake, then the largest man-made lake on Earth. Miraflores remains the only point along the 50-mile canal where the public can stand at lock-side during active transits. The Pacific entrance sees an average of 13,000 vessel movements annually, with morning and late-afternoon windows offering the highest concentration of southbound and northbound traffic. The observation decks operate on no fixed schedule; ships arrive according to tide, draft, and the authority's real-time queue, making each visit unpredictable in its specifics but certain in its outcome.