The tranquil, 4.5km-long Canal St-Martin was inaugurated in 1825 to provide a shipping link between the Seine and Paris' northeastern suburbs. Emerging from below ground near place de la République, its towpaths take you past locks, bridges and local neighbourhoods. Come for a romantic stroll, cycle, picnic or dusk-time drink. From the iron footbridge by the intersection of rue de la Grange aux Belles and quai de Jemmapes, watch the vintage road bridge swing open to let canal boats pass.