The lower town is the real center of Biella. In the cathedral square is the Biella Cathedral, dedicated to Saints Santa Maria Maggiore and Santo Stefano. The construction of the cathedral began around 1400. Inside the cathedral you can admire beautiful frescoes and paintings. The baptistery was built on the remains of a Roman tomb in the 10th century. The Basilica of San Sebastiano, built in1504, houses paintings by Piedmontese artists. The museum is in the cloister of San Sebastiano.
The Palazzo Scaglia was the residence of the Scaglia extended family in the 16th century.
In addition to archaeological material, the city museum also contains remains of frescoes from the 9th century as well as paintings, ceramics and glass from the 18th century.
The Porta della Torrazza arch was built in 1780 by the municipality to commemorate the four visits of the Savoy royal family.