It is often regarded as one of the most beautiful underground stations in the world and features skylights and chandeliers.
The air quality in the City Hall subway station in downtown Philadelphia is much worse than on the sidewalks directly above the station. That is a key finding of our new study published in the ...
the City Hall Station was once the crown jewel of the city’s subway system. Today, it is abandoned but still very well-preserved, making it one of the most fascinating hidden landmarks in the ...