As such, he designed many prestigious buildings in Turin, where the Royal palace was found, and in a number of places in the Asti area. In the mid-19th century Turin was an influential European city hosting important cultural institutions and one of Italy's oldest Schools of Architecture.

Leopoldo Galli, La Bizzarria, near of Turin, tribute by King Vittorio Emanuele II to his wife Rosa Maria Chiara

In Ticino, Leopoldo Galli was responsible for the renovation of the building known as "La Romantica", located in Mèlide at the beginning of the bridge-dam, which was demolished in 2013 to make room for a modern block owned by the entrepreneur Pacolli. The building, which had earlier belonged to a wealthy family from Mèlide, was enlarged and completed in 1852. It reflected the Turin style adopted by Galli in many of his works.

Leopoldo Galli died in Bissone in 1869. His tombstone reads "Architect to His Majesty Vittorio Emanuele II". His white marble bust is attributed to the Ticino sculptor Vincenzo Vela, whom Leopoldo Galli was friends with, and with whom he collaborated in Turin.