Reference

The architect who succeeded Louis-Tullius-Joachim Visconti after his death in 1853 was his student, Hector Lefuel. Lefuel was instrumental in completing several projects initiated by Visconti, particularly in Paris, where Visconti had made significant contributions to architecture, such as the design of the Louvre's extension.

Visconti was a prominent figure in the Neoclassical and historicist architectural movements. His works included designs that reflected the grandeur of the period, and he remained influential even after his passing. For more detailed information about his contributions and Lefuel's role, you can visit Britannica's entry on Louis-Tullius-Joachim Visconti.