Américo Vespucio Avenue is a 64.8-kilometre (40.3 mi)[1]ring road in Santiago,
Chile, named after Renaissance cartographer Amerigo Vespucci. Two adjacent sections of the avenue are occupied by Vespucio Norte Express and Vespucio Sur free-flow tolling highways, which are under concession. Vespucio Avenue meets the two largest roundabouts in Santiago, namely Quilín and Grecia, which have circumferences of 793 m and 535 m respectively.[2]