Provadia-Solnitsata is among the sites distinguished with the European Heritage Label — recognised by the European Union for its contribution to the shared heritage of Europe.
The prehistoric complex Provadia-Solnitsata is located near the modern town of Provadia in Northeastern Bulgaria. It represents the remains of the oldest known salt production center in Europe (5600 – 4350 BC), which later developed into the first prehistoric urban center on the continent (4700 – 4350 BC). The complex consists of a salt-production area with ritual pits (1), an unfortified, and later fortified settlement with massive stone walls (2), a ritual zone (3), and several necropolises (4, 5). It covers an area of approximately 30 hectares. The emergence and development of the site are directly linked to the largest and, in fact, only rock salt deposit in the Eastern Balkans – the so-called Mirovo salt deposit, on which the complex is situated. Throughout most of the Late Prehistory, the producers of cooking salt held a monopoly over the “white gold” across a vast region stretching from the Danube to the Aegean Sea and from the Black Sea to the Central Balkans. Salt became a strategic resource and a key driver of economic and social development. Due to its value, salt also assumed the function of commodity money, making Provadia-Solnitsata the earliest “mint” in prehistoric Europe. The boiling of brine in ceramic vessels at Provadia-Solnitsata represents the earliest recorded case in Europe of this salt extraction technology. This method was used at the site for over a millennium. The necessary heat for the process was either accumulated in specialized installations or provided directly by open fire, both relying on wood burning. Towards the end of the Chalcolithic period, the technology changed: saltwater was evaporated in large open-air basins using the heat of the sun.
The site also includes: a necropolis from the Early Bronze Age; a Scythian grave (6th century BC); a Thracian ruler’s residence (2nd–1st century BC), and a large Thracian burial mound accumulated over subsequent centuries.
Archaeological excavations at the prehistoric salt-production and urban center Provadia-Solnitsata began in 2005 and have continued for 20 archaeological seasons. They are carried out by a large interdisciplinary team of archaeologists from the National Archaeological Institute and Museum at the Bulgarian Academy of Sciences and the Historical Museum of Provadia, as well as specialists from museums around the country and experts in natural and technical sciences from institutes and universities in Bulgaria, Belgium, Germany, France, Serbia, the UK, the USA, and Japan. Bulgarian and international students also actively participate in the research.
On May 15, 2026, in Ahtopol, the 25th “round table” of the Black Sea Strandzha Association took place.
On 22 April 2026, the European Heritage Label (EHL) marked an important milestone with the 2026 Label Award Ceremony, celebrating 15 years of the initiative and officially welcoming Provadia Salt-Production and Urban Centre, into its growing community of 80 sites across 23 countries.
