The Church of San Pietro Martire (St Peter Martyr) was built, with the adjacent Dominican convent, by Filippo Maria Visconti in 1445.

The old castle has a unique raised covered road, high enough for horsemen to ride through, that communicates between the new palace and the old fortifications; there is a Falconry, an elegant loggiato supported by 48 columns, and, in the rear area of the mastio, the Ladies' Loggia made for Duchess Beatrice d'Este.

Vigevano's main attraction is the Piazza Ducale, an elongated rectangle that is almost in the proportions 1:3, built for Ludovico Sforza, starting in 1492-93 and completed in record time, unusual for early Renaissance town planning.

Piazza Ducale was actually planned to form a noble forecourt to his castle, unified by the arcades that completely surround the square, an amenity of the new North Italian towns built in the 13th century.

The interior is on the Latin cross plan, with a nave and two aisles, and houses works by Macrino d'Alba, Bernardino Ferrari and others, as well as tempera polyptych of the school of Leonardo da Vinci.