Part 9/10:
The tale of tunnels continues beyond passenger transit, revealing a disturbing juxtaposition of abandonment alongside active freight lines that ensure the city’s industries flow seamlessly, albeit underfoot.
Philadelphia's Sewage System: An Engineering Marvel
Further below lies Philadelphia’s extensive sewer system—a labyrinthine construction that handles immense volumes of wastewater daily. A marvel of 19th-century engineering, this subterranean network showcases the city’s evolution in sanitation and infrastructure, providing an essential service to its residents.