Thrivingreen

http://www.telegraph.co.uk/travel/destinations/middleeast/11105676/The-worlds-20-oldest-cities.html?frame=2775782

The world's 20 oldest cities These are the world's oldest continously inhabited places - although not all of them are currently welcoming visitors

http://www.petapixel.com/2013/04/05/eye-popping-photographs-of-hong-kong-high-rise-apartment-buildings/

Eye-Popping Photographs of Hong Kong High-Rise Apartment Buildings With a population of over 7 million people packed into an area of 426 square miles, Hong Kong is one of the most densely populated places in the world.