A rainy-day backup route should stay in the same neighborhood

A city-trip note about replacing exposed outdoor stops with covered alternatives without crossing the whole city.

A rainy-day backup route works best when it keeps the same neighborhood and transport line. If a riverside walk or viewpoint fails, I would rather swap to a covered market, museum, station mall, cafe, or bathhouse nearby than rebuild the whole day. The backup should preserve one meal option, one rest point, and one clear exit route.