The Gamboa Rainforest Reserve protects 340 hectares of lowland tropical forest along the eastern bank of the Panama Canal, where Soberania National Park descends to meet Gatun Lake. Established in the early 2000s on former Canal Zone territory, the reserve functions as both a wildlife corridor and a rehabilitation site for injured mammals—including two- and three-toed sloths rescued from urban encroachment and powerline accidents across the Canal watershed. The species Bradypus variegatus and Choloepus hoffmanni share this canopy with over 350 bird species, mantled howler monkeys, white-faced capuchins, and Geoffrey's tamarins. Gamboa sits at the operational heart of the Panama Canal, 25 kilometers north of Panama City, where the Chagres River feeds into the lake that sustains the waterway. Visitor access to the reserve is controlled through the Gamboa Rainforest Resort, which manages guided wildlife safaris and boat-based excursions. Morning departures yield the highest primate and sloth activity; afternoons bring raptors and parrots to fruiting trees along the forest edge. The reserve's trail network intersects with historic Camino de Cruces, the colonial mule route that once carried Peruvian silver across the isthmus. Sloth observation here is passive and distance-dependent. Animals are not handled or baited; guides locate individuals by scanning cecropia and guarumo crowns with binoculars, then position visitors for unobstructed sightlines. The conservation fee supports veterinary care, radio telemetry tracking, and reforestation along degraded corridor segments. Unlike interactive encounter facilities elsewhere in Central America, Gamboa prioritizes behavioral integrity—rehabilitated sloths are released into contiguous forest rather than retained for display. The reserve's proximity to active shipping lanes adds an industrial counterpoint to the ecological narrative. Container vessels pass within 800 meters of observation platforms on Gatun Lake, a reminder that this sanctuary exists because the canal required a stable watershed. What began as hydrological engineering a century ago now sustains one of the most accessible lowland rainforest fragments in Panama, where visitors on sloth sanctuary panama tour excursions can witness both the animals and the infrastructure that inadvertently preserved their habitat.