Nagpur's Narrow Gauge Rail Museum is a good niche stop in a city shaped by railway geography. The collection includes locomotives, coaches, models, signalling equipment, and memorabilia from the narrow-gauge lines that once tied central India together.
It works best for railway enthusiasts and families, but there is enough context for a casual visitor to understand why Nagpur became such an important junction. The outdoor stock is the highlight; go earlier in the day when the heat is less punishing.