Born in Fano on the Adriatic coast, he served his apprenticeship as an architect and painter in Bologna and then moved to Vienna, where he worked for the princes of Liechtenstein.

[citation needed] From 1697, he was employed by Louis William, Margrave of Baden-Baden, where he became chief architect in Rastatt.

Rossi was also active at the court of the Margraviate of Baden-Durlach, until he returned to Italy in 1708, in Parma, where he entered the service of Duke Francesco Farnese.

[citation needed] In Rastatt, Rossi lived with his wife, Anna Magdalena, and their four children until the death of the Marquis in January 1707.

The palace and the Garden were built between 1700 and 1707 by the Italian architect Domenico Egidio Rossi as ordered by Margrave Louis William of Baden.