The sugar loaf is a peak situated in Guanabara Bay.It is a major icon of Rio tourism and has become a trademark of the city. Its name is said to refer to its resemblance to the traditional shape of concentrated refined loaf sugar.A glass-paneled cable car (bondinho),built in 1912, runs along a route between the peaks of Babilônia and Urca. So familiar is this peak, the mere sight of it is sufficient to establish the setting as Rio.