The ancient Varbola fortress (located about 50 kilometers south from Tallinn) was the era’s largest fortress in Europe. It was probably constructed in the middle of the 11th century and its first mention dates back to 1212. The reason for its construction is not precisely known, but explanation might be that it was built to protect the riches held within. The fortress was situated in a strategically important place connecting Western Europe and Scandinavia to Russia.Parts of the over 500 m long circular limestone hill fort still stand to this day.s is told that the Varbola fortress was never conquered by any enemy.Varbola is not only a tourist attraction, it also hosts an annual Tree Carving Festival where artists produce different kinds of wooden sculptures.