Nestled in the heart of the Balkans, Sofia offers visitors the best of exciting city life and peaceful moments in nature. Dress for a day of exploring and make your way to the circular Church of Saint George, the city's oldest architectural landmark that dates back to the 4th century and showcases fresco artwork from as far back as the 1100s. The center is also home to the Sofia Synagogue, one of the largest synagogues in Europe, and the 16th century Banya Bashi Mosque. In between visiting the monuments and landmarks, try the local flavors at Sofia's Central Market Hall, where you'll find fresh food stalls, vendors selling prepared dishes, and souvenir shops. Don't forget to make your way outside the city, too; a trip to Sofia isn't complete without hiking the trails in the surrounding mountain ranges, including Vitosha Mountain.