Complex sentence: The former Chicago, Burlington and Quincy Railroad depot was adapted to serve as Creston's City Hall; it is a 2-story, yellow-brick structure in the French Provincial style, with a red-tiled mansard roof.
Split into simpler sentences: The former Chicago, Burlington and Quincy Railroad depot was adapted to serve as Creston's City Hall. They two-story, yellow-brick structure is in the French Provincial style, with a red-tiled mansard roof.