Itajaí is a municipality in the state of Santa Catarina, Brazil. It is located on the northern central coast of Santa Catarina and is part of the Vale do Itajaí Mesoregion, on the right bank of the Itajaí-Açu river mouth. It lies at the mouth of the Itajaí River, at 20 feet above sea level. The city has the 2nd largest gross domestic product and the highest per capita income in the State of Santa Catarina.

Balneário Camboriú is a coastal city in the southern Brazilian state of Santa Catarina. The city is built on steep hills which drop down to the sea. It is a popular tourist destination for South Americans, who are drawn to its main ocean boulevard Avenida Atlântica, and who swell the city's population from 145,796 to over one million in the summer. Balneário Camboriú is famous for its unique beach-to-beach cable car which links the city's central beach with the beach of Laranjeiras. The city is located 10 km (6.2 mi) south of the city of Itajaí, 96 km (60 mi) south of the city of Joinville, and 80 km (50 mi) north of the state capital, Florianópolis.