Sliven

Sliven is famous for its heroic haiduti who fought against the Ottoman Turks in the 19th century and is known as the "City of the 100 Voyvodi", a voyvoda being a leader of haiduti.

The famous rocky massif Sinite Kamani and the associated Sinite Kamani Nature Park, the fresh air and the mineral springs at Slivenski Mineralni Bani offer opportunities for leisure and tourism. Investors are exploring the opportunity to use the local wind (Bora) for the production of electricity.

Another point of interest and a major symbol of the city as featured on the coat of arms, is the more than 1,000-year-old Stariyat Briast, a huge Smooth-leaved Elm in the center of the city. During Ottoman rule, Turkish officials used it to hang Bulgarian revolutionaries. Today the city is helping the tree to live on by frequent evaluations and reinforcing its base. It was elected Bulgarian tree of the year in 2013. On 19 March 2014 the results of an online poll were revealed at a ceremony in the European Parliament. The Old Elm was voted European Tree of the Year 2014.