The Round Tower (Kruglaya bashnya in Russian, Pyöreä torni in Finnish) stands at the market square end of the old town, one of the few surviving elements of Viborg's 16th-century fortifications. Its massive circular form and thick walls dominate the square's southern end, and it houses a restaurant that has occupied the tower for many years — an unusual setting for lunch.
The tower is a good orientation landmark for exploring the old town. The streets immediately behind it retain some of the pre-war Finnish character, with a mix of 19th-century commercial buildings and earlier structures. The market square in front of the tower is the commercial heart of modern Vyborg, with stalls, shops, and transport connections to the rest of the city.