The Agua Clara Locks opened in June 2016 as the Atlantic gateway to the Panama Canal's third set of chambers, a $5.25 billion engineering expansion that doubled the waterway's cargo capacity overnight. Each of the three water-saving basins recycles sixty percent of its fill volume, lifting Neopanamax vessels—ships too wide for the original 1914 locks—fourteen meters above sea level in a sequence that takes eight to ten minutes per chamber. The observation deck at Agua Clara stands four stories above the lock floor, offering unobstructed sightlines down the 427-meter chamber length and across to the parallel Gatun Locks three kilometers west, the original Atlantic entry point that has operated without interruption for more than a century. The visitor center that houses agua clara locks tickets opens at eight each morning, positioned to catch the early northbound transits when container ships and LNG carriers queue in Gatun Lake's approach channel. The facility's design is spare and functional: a covered terrace, interpretive panels explaining the expansion's water-saving innovations, and a small theater screening footage of the locks' construction and first commercial transit by the Cosco Shipping Panama in June 2016. Unlike the Miraflores Locks on the Pacific side, Agua Clara remains a working industrial site with no landscaped grounds or museum galleries, a fact that sharpens the focus on the engineering itself. The observation platform cantilevers over the lock's eastern wall, close enough to hear the hydraulic arms release and the turbulence of 101,000 cubic meters of water flooding the chamber in under nine minutes. Securing agua clara locks tickets provides access to one of the few vantage points where the scale of post-Panamax shipping becomes legible. A fully laden container ship measures 366 meters long and 49 meters wide, clearing the chamber walls by just sixty centimeters on each beam. The lock gates themselves—each a rolling steel assembly weighing 4,200 metric tons—retract into recesses carved from the basin's concrete flanks, invisible when open but sealing with enough hydraulic force to hold back a fourteen-meter column of water. The expansion introduced sixteen of these gates across the new Pacific and Atlantic lock complexes, fabricated in Italy and transported in sections aboard custom heavy-lift barges. The broader Panama Canal transit experience extends beyond the observation deck. Boat tours departing from the Atlantic anchorages thread through the approach channel, passing beneath the Gatun Dam and into the rainforest fringes of Soberanía National Park, where howler monkeys and three-toed sloths occupy the canopy above the waterway. These excursions pair transit observation with ecological interpretation, a recognition that the canal's hundred-year operation has created an accidental wildlife corridor linking the Caribbean lowlands to the continental divide.