|Comune di Osimo|
Belfry and city hall
|Frazioni||Osimo Stazione, Passatempo, Casenuove, Campocavallo, Padiglione, Abbadia, San Paterniano, Santo Stefano, San Biagio, Santa Paolina|
|• Mayor||Simone Pugnaloni|
|• Total||106 km2 (41 sq mi)|
|Elevation||265 m (869 ft)|
|Population (29 February 2016)|
|• Density||330/km2 (860/sq mi)|
|Time zone||CET (UTC+1)|
|• Summer (DST)||CEST (UTC+2)|
|Patron saint||St. Joseph of Cupertino|
|Saint day||September 18|
Osimo is a town and comune of the Marche region of Italy, in the province of Ancona. The municipality covers a hilly area located approximately 15 km south of the port city of Ancona and the Adriatic Sea. As of 2015[update], Osimo had a total population of 35,037.
Vetus Auximum was founded by the same Greek colonists of Ancona; later it was contested by the Gauls and the Piceni, until conquered by the Romans, who used it as a fortress for their northern Picenum settlement starting from 174 BC. The walls were made of large rectangular stones which are still visible in some locations. It was a colony until 157 BC. The family of Pompey were its protectors and resisted Caesar in 49 BC. Inscriptions and monuments in its town square attest to the importance of Osimo during imperial times.
Osimo was a free commune by 1100 A.D. It was later returned to the Pope by Cardinal Gil de Albornoz. In 1399–1430 it was a fief of the Malatesta family, who built a rocca, or "castle", which is no longer intact. Osimo was again made a part of the Papal States, and remained so until the unification of Italy in 1861.
Osimo retains a portion of its ancient town wall (2nd century BCE).
Under the town is a large series of tunnels with esoteric bas-reliefs.
The town hall contains a number of statues found on the site of the ancient forum.
The new castle (1489), of which parts remain today, was built by Baccio Pontelli.
Among the churches in the town are the following:
- Osimo Cathedral: (8th–12th centuries) The restored Romanesque-Gothic church has a portal with sculptures of the 13th century, an old crypt, a fine bronze font of the 16th century and a series of portraits of all the bishops of the old diocese of Osimo. The baptistery is from the early 17th century and also has a notable baptismal font.
- Basilica of San Giuseppe da Copertino: was founded as a church dedicated to St Francis, but with the canonization in 1753 of Joseph of Cupertino, the church was rededicated and refurbished to house his relics.
- San Marco Evangelista: Erected in 14th century by Augustinian order; refurbished in later centuries, contains an altarpiece by Guercino.
- San Niccolò: 16th-century church
- Sanctuary of the Beata Vergine Addolorata: 20th century Neo-Romanesque church outside of the town center
- Andrea Cionna (born in 1968), holder of the world record for the fastest marathon run by a totally blind man.
- Luigi Fagioli (1898–1952), motor racing driver
- Bruno Giacconi (1889–1957), Olympian