One of the best planned and most beautiful capital cities in the world, Washington DC houses incredible attractions that cannot be found anywhere else in the United States. From historical monuments and interesting museums to national zoo and National Gallery of Art, Washington is full of prominent sights that draw millions of travelers annually. This city is also a technology center that makes Washington a frontrunner in the field of military, medical and other governmental research. Travelers to Washington love to visit the city museums, monuments, institutions and other landmarks that are considered to be amongst the best in the world. Home to about six million people, Washington presents itself as a beautiful metropolitan city that has still not lost connection with its past.