The Río de la Plata and the Riachuelo are the natural borders of Buenos Aires to the east and south. The river is part of the daily landscape of the city and surroundings, up to the Delta in Tigre. Surf practice is very popular in Buenos Aires and nearby areas. In San Isidro, wind surf, kayaking and outrigger (canoes from Hawaii) are practiced. Trips in kayak achieved more relevance in the last years, in the Rio de la Plata and the Delta of Buenos Aires.