Apr 24, 6:39 AM EDT
Everything You Need To Know, Right Now.
Stay connected to the biggest stories unfolding in technology.
The IBTech Newsletter keeps you connected to the biggest stories unfolding in technology.
Please enter a valid email
Media & Culture
Walled Cities Around the World
By IBT Staff Reporter on 04/24/09 AT 2:44 PM
While today's modern cities certainly are graced by large fortifications, since the first days of civilization walls have been built around cities to protect citizens from outside invaders and attacks.