The Santa Teresa Tram, or Tramway, is a historic tram line in Rio de Janeiro, Brazil. It connects the city's centre with the primarily residential, inner-city neighbourhood of Santa Teresa, in the hills immediately southwest of downtown. It is mainly maintained as a tourist attraction and is nowadays considered a heritage tramway system, having been designated a national historic monument in 1985. The line has a very unusual gauge: 1,100 mm. The main line is 6.0 kilometres long.