Since no one else has said it… 80 days podcast:
80 Days is a podcast dedicated to exploring little-known countries, territories settlements and cities around the world. We’re part history podcast, part geography podcast and part ramble. Each episode, we’ll land in a new locale and spend some time discussing the history, geography, culture, sport, religion, industry, pastimes and music of our new location.
The “when transporting a large number of people” is quite a caveat. Sure ok high saturation of public transport / walkable cities is probably achievable with high population density, but in rural / regional areas it’s just not possible.