Chicago cityscape, Willis Tower, reflective glass skyscraper, Lake Michigan shoreline, architectural boat tour, daytime, sunny weather, clear blue sky, seagulls flying overhead, gentle lake breeze, luxurious yacht, white sails, wooden decks, chrome railings, comfortable seating area, tourists taking photos, friendly tour guide, microphone in hand, pointing out landmarks, informative speech bubbles, soft sunlight reflection on water, warm atmosphere, 3/4 composition, shallow depth of field.