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If you have an inquisitive streak to your personality, then the Washington DC tours should be on the top of your priority list. The capital city of the US has an enigmatic attraction which appeals to children as well as adults. It is a diverse metropolis with a variety of interesting facts and places to discover.
from: http://ezinearticles.com/?Explore-The-Capital-Of-USA-With-Washington-DC-Tours&id=6180739
