In Congonhas do Campo, Minas Gerais, Eschwege founded the Fábrica Patriótica (Patriotic Factory) for mining operations while simultaneous studying Brazilian geology in wide reaching research campaigns.

Due to his pioneering research work, teaching and industrial explorations, the Baron of Eschwege left behind a prestigious legacy in Brazil and, even while without gaining the scale and universality of that of Alexander von Humboldt in other South American countries, is worthy of some form of comparison.

He also made several returns to Portugal where he became a correspondent member of the Lisbon Academy of Sciences, and King João VI bestowed upon him the military Order of São Bento de Avis.

However, with Augusto passing away just four months on from having arrived in Lisbon, it was the queen’s second husband that the Baron Eschwege would serve and with the honour that made him famous in Portugal: building the Palace and Park of Pena.

Throughout this period, he embarked on tours of central Europe and Algeria that provided crucial inputs into explaining the architectural solutions found in the Palace of Pena.