Here were the 5 most popular articles on Untapped Cities this past week:
Below the streets of Washington D.C. on Capitol Hill is a subway system just for Congress workers and a veritable underground city.
Photo by @hakimms
An urban explorer in New York City scales Hell Gate Bridge, one of the more imposing but oft-forgotten of the city’s bridges, a model for the Sydney Harbour bridge.
Prospect Park. Photo by gigi_nyc
10 secrets of the uber-famous Grand Central Terminal. Guess what’s wrong with this ceiling?