104- Tunnel 57

<p>At its peak, the Berlin Wall was 100 miles long. Today only about a mile is left standing. Compared with other famous walls in history, this wall had a pretty short life span. The Great Wall of China has been … <a href="http://99percentinvisible.prx.org/2014/03/04/104-tunnel-57/" rel="nofollow" target="_blank">Continue reading →</a></p>