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    Untapped Cities

    untappedcities.com · Publication · on HN since 2013

    Untapped Cities writes about the hidden history, infrastructure and oddities of New York City and other cities.

    Visit blogHN submissions
    HistoryCulture & Society
    What HN says

    HN links it for NYC history such as the pneumatic tube mail network, subway color coding and the 1919 Anti-Mask League.

    Stats for nerds
    66HN people shared it
    41linked in comments
    532story points
    Feb 2026last shared
    2013people per year2026

    Top posts on HN

    1. 1
      350 tons of of chocolate and wine arrive on world’s largest cargo sailboat
      1 person · 127 points · first shared 2024 · 137 comments on HN
    2. 2
      How the New York City steam system works
      2 people · 124 points · first shared 2022 · 56 comments on HN
    3. 3
      The Lost Machine Automats and Self-Service Cafeterias of NYC (2023)
      2 people · 92 points · first shared 2025 · 30 comments on HN
    4. 4
      Opening night at the Apollo Theater, 90 years ago
      1 person · 38 points · first shared 2024 · 2 comments on HN
    5. 5
      NYC’s Pneumatic Tube Mail Network (2013)
      9 people · 26 points · first shared 2013 · 1 comments on HN
    6. 6
      Dirty "Peaker Plants" Remain Essential to NYC's Power Grid
      1 person · 14 points · first shared 2025 · 11 comments on HN
    7. 7
      MTA Adds Second Avenue Subway Line to NYC Subway Map
      1 person · 14 points · first shared 2016 · 1 comments on HN
    8. 8
      The Anti-Mask League of 1919: The Cultural Battle of an Enduring Pandemic
      2 people · 12 points · first shared 2020 · 7 comments on HN
    9. 9
      The pneumatic tube mail system in New York City
      2 people · 11 points · first shared 2023 · 1 comments on HN
    10. 10
      The Taxi Riots of 1934
      3 people · 10 points · first shared 2015 · Discussion on HN

    What HN people wrote when they linked it

    • broccolisoupNov 2016

      To mention the Spanish and Italian way: there are public toilets, some on the street (not that many, mostly near playgrounds), most in public buildings, rail and bus stations and the like. They are always free to use. Condition can be from very good to very poor, depends on the area and who looks after the toilets, mostly.

      Aside from that, every place serving drinks or foods with the possibility to eat in the premises must have fully equipped toilets, and those are usually in good condition, so what most people do is walk into a bar or restaurant and use those. Some people just ask if it's OK to use the toilet, others will buy an espresso or bottle of water. Personally I ask and then pay for someone else's coffee or tip the barman, but I'm neither Spanish or Italian. Paid toilets are unknown there and would be seen with hostility. Toilets at shopping centres and motorway stops can always be used freely. Petrol stations and underground car parks also tend to have toilets that one can use, sometimes you have to ask for the key.

      In France, it is mostly the same except that bar/restaurant toilets tend to be, let us say, a character building experience and being a different culture, the "let me use the toilet and I'll buy a bottle of water from you" thing does not quite work (apart from the water being at least €2.-) There are, however, a lot more public toilets, often the self-cleaning type (the French are big on automation, due to their awkward labour laws), and best of all,…

    • icebrainingJul 2015

      The whole reason the medallion system was created was because prior to the medallions, taxis were a real risk to the general public.

      Nope, the reason it was created was because the taxi drivers where annoyed with the increase of competition during the Great Depression and started striking and destroying property until they got a monopoly over the business.

      From the nyc.gov site: Widespread poverty prompted many New Yorkers to opt for less-expensive forms of transportation, decreasing the demand for taxis. This put many companies out of business and caused many cabdrivers to lose their jobs. The situation was made worse by the tactics of “wildcat” (unlicensed) taxis who used what some considered to be “underhanded tactics,” such as drastically lowering fares, to get more business. The situation in the taxi industry was dire; frustrated cabdrivers turned their anger into violent protest and the demands for industry regulation increased.

      Another source: Striking taxi drivers was nothing new–the first strike took place in 1908, a year after the first taxi company was founded. But this strike had a hostile energy to it, as strikers went hunting for scabs to punish. As one driver put it, “the bastids that was scabbin’, we pulled the doors off their cabs.” Independent cab owners, who had nothing to gain by striking, had their windows smashed by blocks of ice and passengers thrown from their cabs. Police who tried restore order had their tires slashed and marbles thrown under…

    • SomeoneMar 2018

      TBMs are designed at a specific diameter, for the kind of soil to bore through, wear down quickly, and aren’t easily moved. It often isn’t worth it to take apart a TBM and reconstruct it elsewhere, even if you could find a customer wanting a tunnel of the same width through similar soil.

      For long tunnels, it isn’t uncommon to have two TBMs that meet in the middle and are abandoned there (they bore a side tunnel long enough to contain the TBM, and the side tunnel is closed behind them)

      For example, see https://untappedcities.com/2017/02/09/the-200-ton-tunnel-boring-machine-buried-below-park-avenue-used-for-east-side-access/:

      ”Burial of such a large machine was unprecedented in New York City, but is common practice abroad, reported the New York Times in 2011. The Spanish contracting company working on the project deemed it would be more cost effective to leave Seli in place. It was estimated that removal would cost millions and cause delays in existing construction projects. Dr. Michael Horodniceanu, the president of MTA Capital Construction, estimated at the time it would cost $9 million to remove Seli, which had cost somewhere between $6 to $8 million new.”

    • dredmorbiusJul 2022

      I'm not sure there's a significant difference between depths of most of the London and New York subway systems.

      Most of the London Underground is cut-and-cover tunnels sitting just below ground level (2-6m). The Thames Tunnel is 24m below ground level. The deepest station is Bull & Bush, Hampstead, at 57m (180ft) underground:

      https://londonist.com/2015/10/how-deep-does-london-go

      https://londonist.com/london/transport/how-deep-is-your-commute-these-diagrams-show-the-depth-of-each-station

      The NYC subway also uses extensive cut-and-cover routes, though deeper bores exist. The deepest station, at 191st St. (LRI) is 180 ft. (54m) below ground. About the same as the London Underground.

      https://untappedcities.com/2013/06/26/deepest-highest-subway-stations-nyc/

      https://www.nycsubway.org/wiki/Chapter_14:_Engineering_Features_of_the_New_York_Subway

    • twicMar 2025

      New Yorkers love putting things in pipes, don't they? Not content with putting normal things like water, sewage, and gas in pipes, they apparently put steam in pipes, on Roosevelt Island they put a mix of rubbish and vacuum in pipes [1], they used to put the post in pipes [2], apparently they pipe rats to people's houses or something, occasionally once of them puts gunpowder in a pipe [3], and they even put themselves in pipes [4]. It's all very Freudian, they should talk to their therapist about it.

      [1] https://www.untappedcities.com/inside-roosevelt-islands-futuristic-pneumatic-tube-trash-system/

      [2] https://www.untappedcities.com/pneumatic-tube-mail-new-york-city/

      [3] https://en.wikipedia.org/wiki/George_Metesky

      [4] https://en.wikipedia.org/wiki/Second_Avenue_Subway

    • ChrisArchitectJan 2025

      In case this is hugged, this was a submission to the MTA's Open Data Challenge in November that won 'most creative storytelling'.

      > Subway Stories is a series of vignettes that analyze open data to understand how New Yorkers work, enjoy themselves, and stay connected. The interactive visualization allows users to explore how different groups in NYC travel and effectively uses a complex dataset to glean insight into how folks move about the city

      An article: https://www.untappedcities.com/new-map-of-one-billion-nyc-subway-rides-reveals-hidden-connections/

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