Boston and SF

Boston is such a ridiculously small city with an area of 48.4 sq mi (125 km²) & less than 700,000 people.

"Boston is the second smallest major U.S. city in terms of land area after San Francisco that has 47 square miles." https://www.bostonplans.org/getattachment/86dd4b02-a7f3-499e-874e-53b7e8be4770#:~:text=%E2%80%94%20With%20a%20land%20area%20of,up%20the%20Commonwealth%20of%20Massachusetts.

However, the Greater_Boston Area has around 8.5 million people.

https://en.wikipedia.org/wiki/San_Francisco_Bay_Area#Boundaries

 https://www.dailymail.co.uk/travel/article-12844541/Just-cup-tea-Boston-celebrates-250-years-taxes-brew-sparked-revolution-JANE-KNIGHT-seeks-citys-best-cuppa-digesting-nuggets-history-way.html

San_Francisco is slightly smaller than Boston in land area, but it has around 81% of a million people. However, the San_Francisco_Bay_Area has around 9 million people. https://en.wikipedia.org/wiki/San_Francisco_Bay_Area#Boundaries

https://en.wikipedia.org/wiki/tallest_buildings_in_San_Francisco , https://en.wikipedia.org/wiki/tallest_buildings_in_Boston

https://en.wikipedia.org/wiki/San_Francisco#Transportation , https://en.wikipedia.org/wiki/Boston#Transportation

https://en.wikipedia.org/wiki/San_Francisco-Oakland_Bay_Bridge 10 lanes

https://en.wikipedia.org/wiki/Leonard_P._Zakim_Bunker_Hill_Memorial_Bridge 10 lanes