'Fortified City' in the Bible

“Now as soon as this letter comes to you, since your master’s sons (male descendants) are with you, as well as chariots and horses and a fortified city and weapons,

The Israelites ascribed things to the Lord their God which were not true. They built for themselves high places [of worship] in all their towns, from [the lonely] lookout tower to the [populous] fortified city.

He defeated the Philistines as far as Gaza [the most distant city] and its borders, from the [isolated] lookout tower to the [populous] fortified city.

So the Rabshakeh returned and found the king of Assyria fighting against Libnah [a fortified city of Judah]; for he had heard that the king had left Lachish.