A photo-realistic rendering of a modern gym with a large window showing a scenic view of a city skyline. the gym has a well-lit indoor space with wooden flooring and exercise equipment, including stationary exercise bikes and elliptical machines. the walls are made of light-colored wood, and the ceiling is curved, giving the gym a modern and minimalist design. the room is well-furnished with natural light coming from the large window, which provides a bright and natural view of the city skyline with tall buildings and a clear blue sky with fluffy white clouds. the exercise equipment is positioned in the middle of the room, with a row of exercise bikes on the left and right sides, and a weight bench on the right side. the overall atmosphere of the gym is bright and airy, with natural lighting casting shadows on the wooden floor.