One of the best and most admired attractions in downtown Chicago is Chicago River, that divides this part of the city into two large areas -- Chicago Loop and Near North Side.
Chicago River is a stunning result of two vanguard engineering projects in the past: in 1889 - 1910 the flow of Chicago River was redirected, reversing it, making it flow out of Lake Michigan, and flow into Des Plaines River -- 156 miles away from Chicago.
Chicago River is always beautiful, and in summer, especially on weekends, the River is getting very busy with the river traffic: kayaks, rental boats, water taxis, tour boats, etc.
The views from Chicago River banks, from Chicago Riverwalk, multiple bridges, and river boats are spectacular. Riverboat architecture cruises are very popular with Chicagoans and visitors, who can fully enjoy the contemporary city architecture and its historic architectural heritage, as well.
There are famous iconic sites and buildings along Chicago River (Tribune Tower, Wrigley Building, Marina City Towers, Merchandise Mart), many restaurants and modern, upscale hotels. Chicago River is undoubtedly an exciting part of town, making this gorgeous city look even more vibrant and beautiful. Enjoy!