20Abandoned City Hall Subway Station
This abandoned station was recently reopened to very limited tours, but it still isn't used for what it was initially designed for. Which, of course, was as a stop off for people who needed to either get on or get off of the subway.
This City Hall Station is found in
New York, and it's a pretty spectacular visual to see, with old architecture that has remained beautiful despite being abandoned for decades on end. It's the kind of place that any urban explorers would love to see.