The closest is Le Destroit, 13 km south of the city centre; the most famous is Beaufort Castle (Lebanon) (#165 of 9,035 worldwide) 75 km north-east. The oldest dated site in the circle is Alexandreion, founded c. 76 BC.
The 100 km circle reaches into 5 countries: Israel (16), Lebanon (5), Syria (1), Jordan (1), Palestine (1).