Chicago cityscape, architectural boat tour, daytime, sunny weather, calm Lake Michigan waters, modern sailboat, sleek white hull, large glass windows, wooden deck, Chicago skyline in background, Willis Tower, John Hancock Center, Navy Pier, seagulls flying overhead, people taking photos, smiling tourists, life jackets, binoculars, captain steering the boat, gentle lake breeze, soft focus on water ripples, 3/4 composition, panoramic view.