The 409 escalators in the London subway cover a distance every week which is approximately equivalent to several trips around the globe!
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Passengers on the Beijing subway can pay with plastic bottles.
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In major cities like Brooklyn and London, there are fake townhouses that hide subterranean chimney vents, emergency subway exits, and more. Camouflaged in plain sight, they normally go unnoticed within their architectural surroundings.
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NYC's Metropolitan Transit Authority (MTA) dumps old subway cars into the ocean to serve as artificial reef.
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