Today the Church of SS. Annunziata is a new church. It was built in 1915-1935 on the project of two decades, in neo-Baroque by Giuseppe Gallo. With the demolition of the ancient church, which was the work of Charles Morello (the architect of the facade of the Palazzo Reale) and built back to the middle of 600, it has lost an important record of history in via Po. The old building was destroyed in 1926 to allow the opening of the new route to S. Ottavio.

However, there are many furniture that have been transferred to the new church. The construction of the new church was possible only in a uniform "style" with the surrounding buildings, with the footprints of Castellamonte. However, the building rather than based on the tradition of the Baroque in Piedmont, it drew inspiration from the Roman seventeenth century. Inside, most of the altars were rebuilt between 1920 and 1930, while the apse is resumed and design by Bernardo Antonio Vittone, with sculptures by Simon Martinez, in 1743.

It was enriched by the Announcement of Claudio Francesco Belmonte, from the Hermitage in Turin. To the right of the main altar is set the Chapel of Our exhibition, designed by Ignazio Giulio Antonio in 1773, where it appears that procession with the Pietà by Stefano Maria Clemente, designed by Belmonte and painted by his students Molinari, and Peyrolerij Rapous. As testimony to the eighteenth century we still have the wooden choir designed by Giovanni Luigi Cassetta.