Religious architecture • Parish church of Sant'Antonio in the town centre, near the Diano Marina promenade. The current structure is the result of new construction that took place between 1862 and 1865. • Church of
Nazarius and Celsus in the town centre. The building is located in the archaeological area of Prato Fiorito, where the ancient Roman settlements of Lucus Bormani were found. It was built on top of other structures from the Roman period, presenting an intricate architectural style of walls from different eras. Since 2005, the archaeological site has been subject to excavation projects directed by the
International Institute of Ligurian Studies, with authorization from the
Ministry of Cultural Heritage and Activities. So far, about eighty burials have been discovered. • Oratorio della Santissima Annunziata, located adjacent to the port of Diano Marina, is a building dating back most probably to the Middle Ages, but numerous restorations carried out in the following centuries have altered or modified its original structure. • Parish church of San Giacomo in the hamlet of Diano Calderina. It contains a polyptych from 1514 by an unknown painter and a canvas of the
Annunciation by
Domenico Fiasella, both now kept in the diocesan museum of
Albenga. • Parish church of San Nicola in the hamlet of Diano Gorleri. • Church of Sant'Anna in the hamlet of Diano Serreta. The church was built in the 17th century by the Casalmiglias as a family chapel. The marble altar dates back to 1675. • Church of San Biagio in the hamlet of Muratori.
Civil architecture • Palazzo del Parco. The building was built in the mid-19th century and is home to the "Angiolo Silvio Novaro" civic library and the civic museum. • Palazzo Maglione, former seat of the Dianese town hall. • Villa Scarsella. In ancient times, it served as a
Dominican convent, built in the 16th century, along the road leading to
Diano Castello. Since the 1970s, it has been home to a state primary school.
Military architecture • Torre di sant'Erasmo, at the western end of Diano Marina, was incorporated in 1836 into a fort and subsequently transformed into a private residence and is thus no longer recognizable as a former military structure. • Torre dell'Alpicella, or Alpixella, located at the highest point (267 m asl) of Capo Berta, consisting of a circular fortification with rough stone walls and a conical trunk dating back to the 14th-15th centuries. ==Culture==