The Waterford and Suir Valley Railway is a small heritage line that follows the river west of the city, using narrow-gauge trains on part of an old railway route. It is gentle rather than dramatic, with views of the Suir, fields, and wooded banks.
It works especially well for families or anyone who likes slow transport with a sense of place. Check the timetable before going, since the railway is seasonal and services are limited compared with ordinary public transport.