The closest is Bourzey Castle, 19 km south of the city centre; the most famous is Citadel of Aleppo — #310 of 9,079 worldwide — 87 km north-east. The oldest dated site in the circle is Royal Palace of Ugarit, founded c. 1450 BC.
The 100 km circle reaches into 2 countries — Syria (18), Turkey (3).
