USA’s Hudson Line, Metro-North
Leaving Grand Central, the tracks soon cling to the Hudson’s edge, where marshlands, lighthouses, and cliffy Palisades slide past in cinematic sequence. Off-peak fares help, and nearly every seat gets water views. Aim northbound on the left for long glances upriver. Hop out at Cold Spring, then continue to Poughkeepsie for bridges, galleries, and river walks.