The Coronini Mansion, located in the center of Tolmin, is an important symbol of the rich history and heritage of the 18th and 19th century. Once one of the most significant residences of the Coronini family, today it represents a valuable part of the cultural heritage of Tolmin and Slovenia.
The mansion now serves as the Tolmin Museum, showcasing the archaeological, historical, ethnological, and artistic heritage of the Soča Valley. An entrance ticket is required for admission. It is closed on Mondays.
Tolmin’s Three Castles – Witnesses of the Past
In the past, Tolmin was home to three important castles, which testify to the strategic and cultural significance of this area in the Soča Valley:
Castle on Kozlov rob: The remains of a medieval castle still dominate Tolmin from the Kozlov rob hill, offering a stunning view of the valley and the nearby Julian Alps.
Lower Castle on Dor: The castle, also called the Patriarch’s Palace, was the land and administrative center of the Tolmin lordship in the Middle Ages and the occasional residence of the Patriarch of Aquileia. Today, it is entirely in ruins, preserved only in historical records and memory. The site has been partially explored through archaeological research.
The Coronini Mansion: The center of the Coronini family’s rich heritage and today the Tolmin Museum, located in the heart of Tolmin in the Soča Valley.

The Coronini Family, Originally Locatelli – From Lombardy to the Heart of Tolmin
The Coronini family originates from Lombardy, specifically the Bergamo area, similar to the noble families Valvasor, Zois, and Codelli. The family is believed to have Lombard roots. Their lineage traces back to the extensive Locatelli family, mentioned in Bergamo as early as the 12th century. Alessio from Berbenno in the Valle Imagna near Bergamo was a notary and judge in the 15th century, known by the nickname Corona (Corona de Locatellis). His descendants adopted the surname Coronini.
The Coronini family later split into three main branches: Kromberk, Tolmin, and Šempeter. In 1687, all members were elevated to the rank of Counts of the Holy Roman Empire. All three branches eventually became extinct in the male line: the Tolmin branch in 1959, the Kromberk branch in 1990, and the Šempeter branch in 2013. The last male descendant of the Tolmin branch passed away in Vienna in 1959.
The Coroninis abandoned their old castle on Kozlov Rob hill, which had suffered considerable earthquake damage (in 1348 and 1511). Changes in lifestyle also contributed to the decline of the remote fortress, which primarily served military defense purposes. The old castle was abandoned, and the Coronini family moved to the valley, settling in Tolmin. After 1656, they began expanding a modest valley mansion into a grander residence, which today houses the Tolmin Museum. A document from 1656 states that Peter Anton Coronini was leaving the old castle on Kozlov Rob and planned to build a new one. It is believed that material from the demolished Patriarch’s Court was used in the construction of the old town of Tolmin and the new Coronini Mansion. The mansion served as a summer residence, while in winter, the family resided in Gorizia.

The Coronini Mansion – The Rise and Former Grandeur of the Coronini Family in Tolmin
In 1651, Peter Anton Coronini purchased the Tolmin estate, including the governorship of Tolmin, the Kozlov Rob castle, nearby villages, and houses, along with feudal rights, privileges, tolls, and judicial authority over minor and criminal cases. That same year, the Coroninis officially took over the Tolmin estate and began constructing a vast residence in Tolmin, although it was never fully completed. The original plans envisioned a baroque U-shaped mansion.
The mansion initially featured a central castle building with two presumed corner towers and two lower side wings containing service quarters and a chapel. A park extended in the back of the main entrance, and an avenue of trees led to the mansion from the opposite side, where a castle fountain once stood.
By 1669, the central part of the mansion was largely completed, including the chapel of St. Anthony of Padua. The ground-floor rooms had vaulted ceilings, which remain visible today. The original mansion was later expanded with a two-story northern annex, which included a new entrance hall, shifting the main entrance from the south to the east side (now the entrance to the Tolmin Museum), thus reorienting the entire structure.
At its peak, the complex consisted of the central castle wing with a two-story main building (now Mestni Trg 4, home to the Tolmin Museum), two corner towers, two lower auxiliary buildings, and the former castle chapel (now Mestni Trg 6, housing the Soča Valley Tourism Office).
The park in front of the mansion (today’s Mestni Trg) was designed following characteristic baroque spatial principles. Big park was also behind the mansion. Here one tree from the original design, a tulip tree (the so-called castle tulip tree), remains preserved and can be seen at today sport bark Na Brajdi at the main gravel parking lot. The estate was the center of family life during summer and a symbol of the Coronini family’s influence in the region.
In front of the former private chapel, which had its own chaplain, stands the monument to the Great Tolmin Uprising, erected in 1973. The bronze relief by Tone Kralj, dating from 1946, is a significant feature of this monument.

From Noble Residence to Museum
After 1848, due to financial difficulties, the Coronini family sold the mansion. Over time, the complex underwent numerous modifications that altered its appearance, though some elements remain preserved.
In 1951, the main building of the former Coronini Mansion was transformed into a museum, which today operates as the Tolmin Museum. During a major renovation that began in 1992, the entire mansion was restored from the basement to the attic.
Today, the Tolmin Museum is an essential part of the local cultural scene. The restored chapel building, Brajda sports park and the remaining structures as do Hotel Dvorec still testify to the mansion’s former splendor. The mansion remains one of Tolmin’s key historical monuments.
A visit to the Coronini Mansion, located near Hotel Dvorec, offers an insight into the rich history of Tolmin and the Coronini family, who left a lasting legacy in the 18th and 19th century. The Coronini Counts ruled the area during the Great Tolmin Uprising of 1713. The last Coronini in Tolmin, Peter Anton Leopold Luka († 1869), sold the estate in 1848 to Alojzij Silverij Kremer pl. Auenrode, as the family had fallen into significant debt. The new owner later sold the estate in parcels to local farmers.

The Tolmin Museum – A Treasure Trove of Soča Valley History
A visit to the Tolmin Museum offers a unique opportunity to relive the rich history of the Coronini Mansion and explore the heritage that has shaped Tolmin for centuries. The mansion features an impressive central staircase, second staircase and many rooms that are arranged in a characteristic castle style, with direct transitions from one to another.

A walk through the historic halls, with a little imagination, takes us back to the time of noble life, while a glance through the windows reveals the area of the former castle gardens, where today the Brajda sports park stands, along with the ancient castle tulip tree. The vaulted cellar, once filled with exquisite delicacies, still bears witness to the former grandeur of the manor, which was a symbol of the power and influence of the Coronini family.
Visit Tolmin, uncover its rich past, and experience the history of the Coronini Mansion! Visit Tolmin museum. You can discover the mysteries of old Tolmin and its castle stories also through a guided tour and the unique experience named Castle Secrets.
Source: Web page Noble Heritage and Slovenian Biography – SRC SAZU, publication Three Castles, A Thousand Stories – Tolmin Museum.
Katja Kragelj Jug, Tolmin