Curitiba
A bustling metropolis, Curitiba boasts the highest recycling rate and the largest downtown pedestrianised shopping area in the world. With many facilities, museums, and known for the city's initiative to build parks--currently the city has 26--guests will never be short on attractions or activities. Curitiba's emphasis on sustainable urban development and innovation is reflective in the grandeur of their structures, from the atrium-like greenhouse of the Botanical Gardens to the stunning Opera de Arame, a theater made entirely of metal and glass.