No amphibious vehicle has operated commercial tours in Pittsburgh since Just Ducky Tours ceased operations in 2016 after more than two decades navigating the Allegheny, Monongahela, and Ohio rivers. The fleet of six DUKW vessels — World War II-era landing craft repurposed for civilian sightseeing — once carried 100,000 passengers annually through a route that began on pavement near Station Square, descended a boat ramp, and motored past the Point, the stadiums, and the North Shore before returning to dry land. The concept borrowed from similar operations in Boston, Seattle, and Philadelphia, cities where post-war surplus vehicles found a second life in tourism. Pittsburgh's geography made it a natural fit: three rivers converging at the Golden Triangle, bridges stacked in every sightline, and a topography that forced infrastructure into dramatic vertical arrangements. The absence of duck boat tours has not erased demand for hybrid land-water perspectives. River cruises departing from the North Shore and Station Square offer seasonal access to the confluence, passing beneath the Fort Pitt and Fort Duquesne bridges while recorded narration covers steel-era history and modern redevelopment. Walking tours through Downtown Pittsburgh trace the Whiskey Rebellion, Prohibition-era speakeasies, and the architectural legacy of H.H. Richardson and the Allegheny County Courthouse. Bike routes along the riverfronts connect the Strip District, the Cultural District, and the South Side, covering ground that duck boats once traversed at lower speed. These alternatives segment what the amphibious format combined: mobility across two environments without transition. Pittsburgh's riverfront identity persists in the infrastructure that duck boat tour pittsburgh operations once showcased. The Point State Park fountain, visible from water and land, marks the geographic and symbolic center. The inclines ascending Mount Washington offer elevated vantage points that no water-level tour could match. The Roberto Clemente and Andy Warhol bridges carry pedestrian traffic across the Allegheny, framing views that shift with the light and the season. The Fort Pitt Blockhouse, a 1764 stone redoubt tucked into the confluence, remains Pittsburgh's oldest authenticated structure, a fixed landmark in a city that rebuilt itself multiple times. These elements compose the same visual inventory that guided amphibious routes, now accessible through separate modes rather than a single vehicle. The Three Rivers Heritage Trail, a 24-mile paved loop linking both banks and all three waterways, delivers continuous river proximity without requiring watercraft. Sections pass former industrial sites now converted to parks, marinas, and mixed-use development. The trail system connects to the Great Allegheny Passage, a 150-mile rail-trail extending to Cumberland, Maryland, positioning Pittsburgh as a hub for long-distance cycling and pedestrian tourism. Water taxis and charter boats operate seasonally, offering private and scheduled crossings that serve both transportation and sightseeing functions. The infrastructure remains; the amphibious synthesis does not.