Mumbai Suburban train. Underserved, over crowded, affordable + rare ticket checking leads to thousands of people rushing to use the train. I have been crushed, harassed, insulted, etc while traveling on these trains.
Wuhan Railway Station. The design was inspired by the yellow crane, the symbol of Wuhan City. The distinctive roof is intended to resemble the crane's wings, and is based on a sine curve.
Study how to lower an urban rail line with a cut and cover method whiles keeping one track open and transporting excavated material away via an existing track.