The Old Synagogue in Dubrovnik, Croatia is the oldest Sefardic synagogue still in use today in the world and the second oldest synagogue in Europe. It is said to have been established in 1352 but gained legal status in the city in 1408. Owned by the local Jewish community, the main floor still functions as a place of worship for Holy days and special occasions, but is now mainly a city museum which hosts numerous Jewish ritual items and centuriesold artefacts.
Located in one of the many tiny streets of the Old Town of Dubrovnik, it is connected to a neighbouring building which has long been owned by the Tolentino family, who have been caretakers of the synagogue for centuries.[2] The internal layout is different from other European synagogues and has gone numerous refurbishments throughout the centuries, and has a mixture of designs from different eras. The building has sustained damage several times, with the great earthquake in 1667, World War II, and the Croatian War of Independence in the 1990s. The damage has since been repaired as closely as possible to its original design, and the synagogue reopened in 1997. The small museum contains many artifacts from throughout the Jewish community’s history in the city.
https://www.godubrovnik.guide/dubrovnikthingstodo/jewish-synagogue/