The coastal tram route at the Belgian coastline is the longest one in the world. The tram connects 68 consecutive stops between the cities De Panne and Knokke-Heist. A total of 67 kilometers, that's almost 42 Miles. On the route, the trams almost never lose sea view and every day a vacuum cleaner tram is needed to suck the sand off its rails. The tram route is over 130 years old.