The majestic Brescia Cathedral is a unique architectural ensemble combining two churches from different eras on a single square. The dominant feature of the complex is the "New Cathedral" (Duomo Nuovo), dedicated to Santa Maria Assunta. This grand Baroque temple, built from white Botticino marble, is striking in its scale and is considered one of the most important religious buildings in Italy.

The cathedral's 80-meter dome is particularly significant, ranking as the third-largest in the country, surpassed only by those in Rome and Florence. Inside, Brescia reveals true treasures to tourists: the interior is bathed in soft light that highlights the elegance of the Corinthian columns, paintings by the master Moretto, and the ancient sarcophagi of the city's patron saints.
Right next to the lavish facade of the New Cathedral stands its predecessor — the Old Cathedral (Duomo Vecchio), or the "Rotonda." This austere, circular 11th-century building is one of the finest surviving examples of Romanesque architecture in the region, creating a striking contrast between medieval simplicity and Baroque luxury on Piazza Paolo VI.