No, but rather the United States Constitution. But even then, "Washington, D.C." is not specifically named, just that the future (at the time) capital of the United States has to be held in a District separate from the states.
Washington D.C
the answer is Baghdad
Frankfort
Topeka
Oslo
Denver
Guatemala City
The Washington Monument The Washington Monument is a structure not a building. The tallest building in Washington D.C. is the Basilica of the National Shrine of the Immaculate Conception. Though if you ever decide to be a tour guide, the the answer to the three tallest buildings are: Captiol, Old Post Office Pavillion and the National Cathedral.
washignton dc
Capital: Hanoi
San Juan.
Kathmandu is Capital of Nepal.