There were some decorations on the outside
walls of Casa Spineda, they represented the four seasons, Proserpina, Adonis’ death, Pallade and Nettuno;
we have the one evidence of Mr. Burchiellati about these information today, because he was a notorious expert of Treviso history.
The Earl Marcantonio Spineda decided to restore and to enlarge the Palace in the 18th century, according
to other evidences.
The building was extended on the back in this period, it is typified by a majestic
main stair which develops from below with two flights, supported by an arcade leaning on Doric columns.
The main stair ends on the first floor with a one steps.
The Spineda Palace was provided with a splendid parties hall on that occasion, it develops still on two floors
Gaspare Diziani made the frescoes of main stair in Casa Spineda, this event is attested
by some found letters; he had been appreciated already for his frescoes made in Venice and Castelfranco Veneto.