Macapá is the capital city of the state of Amapá in Brazil, (population: 339,500), on the Amazon River.

Accessible only by boat or by plane, the city lies exactly on the Equator, at 0º N, and hosts a monument to this, known as Marco Zero (Zero Mark). Next to it there are both a sambadrome and a football stadium (the Zerão), proud to be the only one in the world where each half of the field is located in opposite hemispheres.