The Chicago River runs backwards on purpose. In January 1900, engineers opened the Sanitary and Ship Canal and reversed the current, pulling the river away from Lake Michigan to protect the drinking water of a city of 1.7 million. The reversal turned a sluggish industrial channel into a working waterway, and it gave the city something few places possess: a navigable canyon cut through the centre of a skyline. Every Chicago Night Cruise Fireworks sailing inherits that geography. Passenger boats have worked this water since 1935, when Albert Borgstrom, a Norwegian immigrant, named his first vessel for his son Wendell and began running trips from the bank below the Wrigley Building. Chicago Night Cruise Fireworks tours still leave from that same stretch of river wall. The dock at 400 N Michigan Avenue sits at the foot of the 1920 Michigan Avenue Bridge, a double-deck bascule span raised on the ground of old Fort Dearborn. A few hundred metres east stands the Chicago Harbor Lock, completed in 1938 and still one of the busiest locks in the United States. Vessels bound for open water pass through it, rising or dropping a few feet between river and lake. The pyrotechnics belong to Navy Pier. That structure opened in 1916 as Municipal Pier, a 3,300-foot hall for freight and public recreation, later a Navy training station and then a university campus. Barges moored off its southern flank now launch the displays, and the 9:00 PM show is read twice by anyone afloat: once overhead, once in the water. A Chicago River fireworks cruise therefore holds two images at the same time, the lakefront burst and its mirrored double, framed by steel and limestone. Architecture carries the remainder of the evening. Marina City's twin corncob towers, finished in 1964 to Bertrand Goldberg's design, still rise from their own boat basin. 333 West Wacker Drive answers the river bend with a curve of green glass from 1983. The Merchandise Mart, completed in 1930, held the title of largest building in the world by floor area for decades. Thirty-eight movable bridges remain on the city's books, more than any other American city keeps. The Riverwalk reached Lake Street in 2016, lining the south bank with terraces that hold light long after sunset. Autumn air sharpens every edge of that view, which is why the October sailings of 2026 read so cleanly against the towers. These are the Chicago landmarks that give a Chicago Night Cruise Fireworks tour its weight: engineering first, spectacle second.