The Anastasian Wall (Greek: Ἀναστάσειον Τεῖχος, Anastáseion Teîchos; Turkish: Anastasius Suru) or the Long Walls of Thrace (Greek: Μακρὰ Τείχη τῆς Θράκης, Makrà Teíchē tês Thrákēs; Turkish: Uzun Duvar) is an ancient stone and turf fortification located 64 km (40 mi) west of Istanbul, Turkey, built by the Eastern Roman Empire during the late 5th century.
Ἀναστάσειον Τεῖχος (in Greek)
Anastasius Suru (in Turkish)
|Alternative name||Long Walls of Thrace|
|Location||Istanbul, Istanbul Province, Turkey|
|Length||56 km (35 mi)|
|Width||3.3 m (11 ft)|
|Height||5 m (16 ft)|