"This historic streetcar system has been running since the 19th-century.

The city of Porto, Portugal has many historic buildings, but for fans of transport history, the three remaining lines of the Porto Tram System are a thing of wonder.
-- [www.atlasobscura.com]

"While it’s possible (and indeed, enjoyable) to walk from downtown Porto to the coast, not everyone is up for the hour-long walk, especially in the height of summer. A popular alternative is the vintage number 1 tram, that slowly grinds its way along the river from the Casa do Infante in the old town, finally stopping near Passeio Alegre, a small manicured garden at the mouth of the Duoro.

Single tickets are a reasonable €3, but try to get on as close to the start of the line as possible—the trams can get very busy in high season, and only run every twenty minutes. "
-- [www.tripsavvy.com]
-- Photo: TripSavvy / Christopher Larson

Porto Tram City Tour -- [www.youtube.com] -- Video 11m 26s

Gsearch [porto trams] [www.google.com]