Erechim is a Brazilian municipality located in the southern state of Rio Grande do Sul. A regional center in the northern portion of the state, it is the second most populous city in the region with 106,633 inhabitants, second only to the city of Passo Fundo. The municipality ranks 17th in total gross domestic product in the state of Rio Grande do Sul.
Erechim was one of the first planned modern cities in Brazil. City planners were inspired by urban concepts used in the design of Washington, D.C. (1791) and Paris (1850). These were characterized by very wide streets and bold outlines, with diagonal streets converging at important points. Key elements of its design include a perpendicular grid of streets cut by diagonal avenues, blocks of regular dimensions and a promenade around its perimeter.
The municipality is located north of Rio Grande do Sul, in the Upper Uruguay, on the ridge of the Serra Geral.