Seville lies roughly eighty kilometres from the Atlantic, yet it remains Spain's only inland seaport. Ocean-going ships have worked upstream to its quays for more than two thousand years. The Guadalquivir made the city: Phoenician traders, Roman oil amphorae, Almohad garrisons and the Casa de Contratación all arranged themselves around one brown ribbon of water. The reach now travelled by Seville Boat Tour with Dinner tours is, strictly speaking, no longer a river. Twentieth-century engineers straightened the channel west of Triana, leaving the central city stretch a dársena, a closed dock of still water. That stillness explains the view. From deck level the Torre del Oro reads as intended: a twelve-sided Almohad watchtower raised in 1220–1221 to anchor a chain across the water and close the port to hostile fleets. Opposite stands Triana, where the Castillo de San Jorge housed the Spanish Inquisition from 1481 until 1785; its foundations, excavated in the last century, are preserved beneath the neighbourhood market. Downstream, the Puente de Isabel II of 1852 endures as the oldest iron bridge in Spain, its three cast ellipses copied from a Parisian model long since demolished. The river also records departures. Magellan's five ships cast off from Seville on 10 August 1519; Elcano brought one of them home in September 1522, the first vessel to circle the earth. For two centuries, by royal decree, every ounce of American silver entering Spain was weighed and registered on these banks. Expo '92 returned the waterfront to public use: Santiago Calatrava's Alamillo Bridge, balanced on a single inclined pylon, and the arched Barqueta crossing both date from that year, with the Isla de la Cartuja behind them taking its name from the monastery where Columbus once stored his papers. Seen from the water, the pieces resolve into one continuous façade — Arenal, Triana, Cartuja, the glass shaft of Torre Sevilla. That is why a Seville Boat Tour with Dinner tour, or what Sevillanos call simply a crucero por el Guadalquivir con cena, functions less as a meal than as a slow reading of the city's western edge. Evening sailings catch the sandstone turning copper above the Muelle de Nueva York. The eco cruise and the standard Guadalquivir river cruise trace the same meander in daylight, without a table laid.