Maximilian von Welsch is regarded as a prominent representative of baroque fortress building in the Holy Roman Empire.
He was made an imperial knight with the title Edler von Welsch for his services to architecture by Charles VI, Holy Roman Emperor in 1714.
In Mainz he was not only responsible for the construction of the fortress, but Lothar Franz von Schönborn assigned him also with the architectural design of his summer residence Favorite opposite the confluence of the Main river with the Rhine.
As the renowned architect was appointed High Director of Building of the prince-elector of Mainz and of Bamberg (until 1729), he was responsible for quite a lot of palace extensions and new constructions.
At least since the 1720s Maximilian von Welsch had been displaced more and more by the ambitious Balthasar Neumann, the most renowned baroque architect of Germany at that time.