| Some underground networks |
New York Times |
28 Aug 2025 |
| London and Budapest have had them since 1863 and 1896, respectively |
New York Times |
15 Feb 2025 |
| Paris and Shanghai transit systems |
USA Today |
01 Feb 2025 |
| Population centers, informally |
New York Times |
19 Sep 2024 |
| Urban areas, informally |
New York Times |
24 May 2024 |
| Urban transit networks |
Universal |
31 Mar 2024 |
| Paris subways |
Thomas Joseph |
11 Dec 2023 |
| Underground systems |
LA Times Daily |
29 Oct 2023 |
| City subways |
Eugene Sheffer |
26 Jun 2023 |
| Some underground railways |
Universal |
29 Apr 2023 |
| Subways |
USA Today |
02 Aug 2021 |
| European transit systems |
The Washington Post Sunday |
04 Jul 2021 |
| Urban transit systems |
LA Times Daily |
15 Mar 2021 |
| Urban transit systems |
The Washington Post |
15 Mar 2021 |
| Some undergrounds |
LA Times Daily |
12 May 2020 |
| Some undergrounds |
The Washington Post |
12 May 2020 |
| City subways |
Eugene Sheffer |
04 Oct 2019 |
| Underground networks |
New York Times |
06 Jun 2019 |
| Old Geo models |
Eugene Sheffer |
20 May 2019 |
| Underground networks |
|
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| Former Geo models |
The Washington Post Sunday |
30 Dec 2018 |
| Subway systems: put 'em in order, from below |
|
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| Subways |
New York Times |
04 Jul 2018 |
| Old Geo models |
The Washington Post Sunday |
06 May 2018 |
| Subways |
|
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| Subway systems |
Wall Street Journal |
17 Jun 2017 |
| Underground systems |
LA Times Daily |
28 May 2017 |
| Underground systems |
The Washington Post |
28 May 2017 |
| Underground systems |
|
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| Subway systems |
|
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| Subway systems |
|
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| Undergrounds |
|
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| Some public-transit systems, briefly |
|
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| Washington and Paris transit systems |
|
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| Transit systems in Delhi and Paris |
|
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| Transit systems in Delhi and Paris |
|
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| Subway systems |
|
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| Some urban transit systems |
|
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| Subway systems |
|
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| City subways |
|
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| Urban railways |
|
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| Underground complexes |
|
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| Underground complexes |
|
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| Subways |
|
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| Some Geos |
|
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| Subterranean railways |
|
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| Underground transport systems |
|
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| Little cities? |
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| Little cities? |
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| Some have red lines |
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| Major-city areas |
|
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| Subway systems |
|
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| Subways |
|
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| Some undergrounds |
|
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| Some undergrounds |
|
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| Underground railways of Paris and D.C. |
|
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| Some transit systems |
|
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| Two world capital transits |
|
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| Paris tubes |
|
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| Subway systems |
|
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| Paris tubes |
|
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| DC and Paris railways |
|
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| Public transportation |
|
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| Small Chevys |
|
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| Two capital transits |
|
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| Some transit lines |
|
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| Underground systems |
|
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| Washington and Paris transits |
|
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| Geo models |
|
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| European subways |
|
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| Subways in Milan, Paris, etc. |
|
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| Subways on the Continent |
|
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| Parisian lines |
|
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| Paris subway lines |
|
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| Paris subways |
|
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| Undergrounds. |
|
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| Some free newspapers |
|
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| Moscow and Paris subways. |
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| They often have red lines |
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| Subways, in Europe. |
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