- Duomo (cathedral),
begun in 1398 on the site of the previous Romanesque church of Santa
Maria Maggiore. The façade was built in 1457, with the notable rose
window and two Renaissance statues of the famous Comaschi, Pliny the
Elder and Pliny the Younger. The interior is on the Latin cross plan,
with a nave and two aisles divided by pilasters. The transept wing and
the relative apses are from the 18th century. It include a carved 16th
century choir and tapestries on cartoons by Giuseppe Arcimboldi. The dome is by Filippo Juvarra. .
- San Fedele, a Romanesque church erected around 1120 over a
pre-existing central plan edifice. The contemporary bell tower was
rebuilt in modern times. The main feautre is the famous Door of St.
Fedele, carved with medieval decorations.
The church of San Fedele, apse area.
- Sant'Agostino, built by the Cistercians
in the early 14th century, but largely renovated in the 20th century.
The interior and the annexed cloister have frescoes from the 15th-17th
centuries, but most of the decoration comes from the Baroque era.
- The Romanesque church of Sant'Abbondio, consecrated in 1095 by Pope Urban II. The interior, with a nave and four aisles, contains beautiful paintings dating to the 11th century and frescoes from the 14th.
- San Carpoforo (11th century, apse and crypt from 12th century). According to tradition, it was founded re-using a former temple of the God Mercury to house the remains of St. Carpoforus and other local martyrs.
Public edifices and other sights
- Broletto (ancient Town Hall)
- Casa del Fascio, possibly Giuseppe Terragni's most famous work. It has been described as an early "landmark of modern European architecture".
- Monumento ai caduti (by Giuseppe Terragni)
- Teatro Sociale (by Giuseppe Cusi)
- Villa Olmo, built from 1797 in neoclassicist style by the Odescalchi family. It housed Napoleon Bonaparte, Ugo Foscolo, Metternich, Emperor Francis Ferdinand I, Giuseppe Garibaldi and other eminent figures. It is now seat of exhibitions.
- Villa Melzi (1808-1810), with a magnificent panorama over the Lake. It has a famous giardino all'Italiana. According to tradition, Franz Liszt composed here some of his most famous piano sonatas.
- Villa Carlotta (c. 1690). It has an English-style park, and a collection of marbles by Canova, reliefs by Thorvaldsen and others.
- Ancient walls (medieval)
- Castello Baradello, a small medieval castle.
- Musei Civici
- Museo archeologico "P. Giovio"
- Museo Storico
- Tempio Voltiano, a museum devoted ot Alessandro Volta's work.
- Museo della Seta
- Museo Liceo classico "A. Volta"
- Villa Olmo (expositions)