[1] The Palace of the Eleven Windows was |built in the 18th century as the weekend residence of Domingos da Costa Bacelar, owner of the sugarcane mills located at the mouth of the Guamá River.

[3] In 2001, to benefit the city's history and tourism, the state government created the Feliz Lusitânia (English: Happy Lusitania) Project, which aimed to revitalize the initial historic nucleus of Belém.

To this end, the government signed an agreement with the Brazilian Army, alienating the grounds of the Palace of the Eleven Windows and the Castle Fortress, turning them into historic buildings.

[7] The area surrounding Palace of the Eleven Windows has a set of cultural facilities, such as the Sculpture Garden, the Corveta ship, and a stage that projects over the bay.

In the external area, the most relevant changes were the addition of a triangular pediment, flanked by obelisks on the main facade, and the disfiguring closing of the openings on the side facing the river.