The Fatih Mosque, built between 1463 and 1470 on the site of the Church of the Holy Apostles, was severely damaged in the 1766 earthquake and rebuilt in 1771 with a different design. It is named after Sultan Mehmed the Conqueror, who captured Constantinople in 1453.
The original mosque had a central dome supported by a single semi-dome, while the rebuilt version follows a Baroque style with a square plan, a central dome, and four semi-domes. Only the courtyard, entrance portal, and lower minarets remain from the original. The interior mimics designs by Sinan, with a 26-meter dome, large marble columns, and two minarets. The calligraphy and mimbar show Baroque influences, but the tiles lack the grandeur of İznik ceramics. The original mihrab survives.
As an imperial külliye, the mosque complex included eight symmetrical medreses, once accommodating a thousand students. A dervish inn, featuring salvaged columns from the Church of the Holy Apostles, stands southeast of the mosque, facing the türbe of Nakşidil Sultan, mother of Mahmud II.
The graveyard holds the tombs of Sultan Mehmed II and Gülbahar Hatun, reconstructed after the earthquake. The lavishly decorated tomb of Mehmed II was a ceremonial site for new sultans after receiving the Sword of Osman. The graveyard also houses notable figures, including Gazi Osman Pasha and historian Halil İnalcık.
Attached to the mosque is the Carullah Efendi Library, built in 1724 and currently under restoration. The külliye's original hospital, market, kitchens, and bathhouse have been lost, but the caravanserai was restored in the 1980s and now functions as a workplace.
The church of the former Franciscan monastery was built probably between 1515 and 1520. It is located in the UNESCO World Heritage Site of Old Rauma. The church stands by the small stream of Raumanjoki (Rauma river).
The exact age of the Church of the Holy Cross is unknown, but it was built to serve as the monastery church of the Rauma Franciscan Friary. The monastery had been established in the early 15th century and a wooden church was built on this location around the year 1420.
The Church of the Holy Cross served the monastery until 1538, when it was abandoned for a hundred years as the Franciscan friary was disbanded in the Swedish Reformation. The church was re-established as a Lutheran church in 1640, when the nearby Church of the Holy Trinity was destroyed by fire.
The choir of the two-aisle grey granite church features medieval murals and frescoes. The white steeple of the church was built in 1816 and has served as a landmark for seafarers.