As the citadel of Sibiu was for centuries a fortress at the gates of Transylvania, it was surrounded by walls and defense towers, most of which still proudly stand: the Council Tower, built in the 13th century, the Harquebusiers' Tower, the Potters' Tower, the Carpenters' Tower, all built in the 15th century, the Thick Tower, erected at the middle of the 16th century, the Haller Bastion, built in 1552, the circular Gunpowder Tower and the Tanners' Tower.
Kako je citadela Sibiu stoljećima bila utvrda na ulazu u Transilvaniju, bila je okružena zidinama i obrambenim tornjevima, od kojih većina i dalje ponosno stoji: Toranj vijeća, izgrađen u 13. stoljeću, Toranj mušketira, Lončarski toranj, Stolarski toranj - izgrađeni u 15. stoljeću, te Debeli toranj, podignut sredinom 16. stoljeća, Utvrda Haller, izgrađena 1552., kružni Barutni toranj i Kožarski toranj.