Assumption of Mary Parish Church (Dekani)

The Cathedral of the Assumption of the Blessed Virgin Mary (Slovene: Stolna cerkev Marijinega vnebovzetja) also called Koper Cathedral is the Catholic cathedral of the Diocese of Koper, in the city of Koper, Slovenia.The church was built in the second half of the twelfth century in Romanesque style, with three naves, each ending with an apse. Until 1392 the church underwent changes and additions, which also led to a change of style: the western facade is clearly Gothic. After an earthquake in 1460, the facade was redesigned in 1488, with the addition of Renaissance elements. The tower, which offers views of the city and the bay, is four stories, follows the style of an Italian bell tower and houses one of the oldest bells in Slovenia, dating back to 1333. Early 18th century, Koper was under Venetian influence, and was again an architectural transformation in the Baroque style. Under the direction of Giorgio Massari, additional landscaping elements were added to the church, including valuable paintings of Venetian painters Pietro Liberi, Celesti Andrea, Antonio Zanchi and Vittore Carpaccio. The most important painting is the Holy Conversation of Vittore Carpaccio, dating from 1516.

The Loggia Palace (Italian: palazzo della Loggia) is a Venetian Gothic palace in Koper, a port town in southwestern Slovenia. It is the only preserved Gothic town hall in Slovenia.

The Praetorian Palace (Slovene: Pretorska palača, Italian: palazzo Pretorio) is a 15th-century Venetian Gothic palace in the city of Koper, in southwest Slovenia. Located on the southern side of the city's central Tito Square (at Titov trg/piazza Tito 3), it houses the Koper city government and a wedding hall. It is considered one of the city's architectural landmarks.

University of Primorska (Slovenian Univerza na Primorskem, Italian Università del Litorale) is a public university in Slovenia. It is located in Koper, Izola, and Portorož and is named for the Slovenian Littoral region, where it is located.

The Diocese of Koper (Latin: Dioecesis Iustinopolitana; Slovene: Škofija Koper; Italian: Diocesi di Capodistria) is a Latin diocese of the Catholic Church in southwestern Slovenia. It is part of the ecclesiastical province of Ljubljana. Its cathedral is dedicated to the Assumption of Mary and is located in the Adriatic port town of Koper. A co-cathedral, the Co-Cathedral of Christ the Saviour, located in Nova Gorica, gained its status in 2004. The Latin name of the diocese, Dioecesis Iustinopolitana, is due to the fact that Koper was in the past name Justinopolis in honour of the Byzantine emperor Justinian II.

Brutti Mansion (Slovene: palača Brutti; Italian: palazzo Brutti) is a mansion in Koper, a port town in southwestern Slovenia. It was built in the late-Baroque style in 1714 according to plans by the architect Giorgio Massari, at the request of Count Barnabi Brutti. It houses the central library of Koper, named after the librarian and politician Srečko Vilhar.

Gravisi–Barbabianca Mansion (Slovene: palača Gravisi-Barbabianca; Italian: palazzo Gravisi-Barbabianca) is a Baroque mansion in Koper (Italian: Capodistria), a port town in southwestern Slovenia. It was built in 1710. It was the family seat of the Gravisi family, who held the title of the Marquis of Pietrapelosa. Today it is the home of a music school.

Gravisi–Buttorai Mansion (Slovene: palača Gravisi-Buttorai; Italian: palazzo Gravisi-Buttorai) is a mansion in Koper, a port town in southwestern Slovenia. It is a protected monument of local significance. The mansion is situated at Shoemaker's Street (Slovene: Čevljarska ulica, Italian: Calegaria) in the old town center. It was the seat of a branch of the Gravisi family, whose senior line had the title of Marquis of Pietrapelosa, first granted to Nicolò Gravisi in 1440.

The Koper Regional Museum (Slovene: Pokrajinski muzej Koper; Italian: Museo regionale di Capodistria) has been housed since 1954 in the spacious early 17th century Belgramoni Tacco Palace, and is responsible for the movable cultural heritage in Primorska region of Slovenia. The museum originated in 1911 as the Municipal Museum of History and Art (Museo Civico di Storia e d'Arte). At its centenary in 2011, the museum opened a new permanent exhibition Between the Serenissima, Napoleon and the Habsburgs and enriched its collection.

Belgramoni–Tacco Mansion (Slovene: palača Belgramoni-Tacco; Italian: palazzo Belgramoni-Tacco) is a mansion in the city of Koper, in southwestern Slovenia. It was built around 1600. It features elements of Renaissance and Baroque, but in general has been regarded as a Mannerist building. The mansion currently serves as the seat of the Regional Museum of Koper. It is protected as a cultural monument of local significance.

The Carli Mansion (Slovene: palača Carli; Italian: palazzo Carli) is a mansion in Koper, a port town in southwestern Slovenia. It is named after the family of the historian and encyclopedist Gian Rinaldo Carli, who was born in it in 1720. It is an example of the Baroque architecture, with a balcony in the piano nobile, decorated with a three-mullioned window. Its inner court, decorated with frescoes, has a fountain from 1418.

Almerigogna Mansion (Slovene: palača Almerigogna; Italian: palazzo Almerigogna) is a mansion in Koper, a port town in south-western Slovenia. It is one of the most significant Gothic monuments in the town.