Katarzyna Estate lies in the far south of Bulgaria, at the foot of the Eastern Rhodopes, two kilometres from the Greek border, in a locality called Byalata Prast - White Soil. The producer dates the project to 2003, when Krzysztof Trylinski walked the land around the village of Mezek and decided to build a winery there in the style of a French chateau; planting followed between 2004 and 2007, the bulk of it in 2006, and the first harvest came in that year. Svilen and Ivan Kisyov are the chief winemakers.
The climate the estate describes is moderate continental with a strong Mediterranean push: warm summers, mild winters, and an unusually small swing between the two. An air corridor forms between the Sakar mountain and the Eastern Rhodopes and runs through the vineyards, which sit between 120 and 180 m. The estate calls this the area with the longest sunshine duration, and puts the growing-season temperature sum at 4000 degrees C. The soils are cinnamonic forest soils in three states - leached (Chromi-eutric cambisols), heavily eroded and shallow (Eutric regosols), and lessivated (Chromi-luvisols) - and the producer credits that variety of ground for its ability to pick fruit of quite different character across one property.
How much land is genuinely unclear. The estate's own site gives 5500 decares in one place and 7500 in another, roughly 550 against 750 hectares; the wine-tourism directories mostly repeat 7500, one gives 730 hectares. Reds outnumber whites about seventy to thirty, and the plantings run from the international varieties to Bulgarian ones, Mavrud and Rubin among them.
One geographic point matters for reading the labels. The winery building stands in Svilengrad municipality, near Mezek, but the vineyards themselves lie across the boundary in the lands of Belitsa and Lozen, in Lyubimets. The PDO Sakar zone covers only five Svilengrad settlements, so the estate's fruit falls outside it, and the wines carry the much broader Thracian Lowland PGI because that is the designation open to them.