Parnaiba is a Brazilian city located in the state of Piauí, and is considered one of the oldest cities in Brazil, with a history dating back to the 17th century.
During colonial times, the city became an important commercial and transit center for gold and other products that were shipped from the Northeast region to Europe.
Parnaiba was also a major export port for cotton and carnauba wax, and its river port remains one of the most important in Brazil to this day.
The city has a rich cultural heritage, with a well-preserved historic center and a large number of historical monuments, including churches, museums, and old colonial mansions.