9. Washington, D.C.
Its not just politics as usual in united states capital there are many things to see and do. Visitors can enjoy the city's inspiring and diverse architechure with modern buildings that range in stars.
The are historic sites and museums like National Mall is a large which is an open park between the Lincoln Memorial and the United States Capitol and of course the White house. There is no surprise that tourism is the second most profitable industry in the District of Columbia.