What are the real meanings behind these famous symbols?

[ahlam1399]

http://img-s-msn-com.akamaized.net/tenant/amp/entityid/BBDPyaS.img?h=100&w=100&m=6&q=60&o=f&l=f&x=1698&y=834These symbols are usually found in cities all over the world, but not everyone knows what they actually mean.

أكثر... (http://www.msn.com/en-in/lifestyle/smart-living/what-are-the-real-meanings-behind-these-famous-symbols/ss-AAp4lwP?srcref=rss)