Hi, can you tell me about Washington D.C.'s economy please? 
 Yes, I can. The GDP per capita there has consistently ranked top among US states between 2009 to 2016. 
 Really, what drives its economy 
 Well, their metropolitan area's gross product was $435 billion in 2014 causing it to be the 6th largest metropolitan economy in all of the USA. 
 Is tourism a big source of its income? 
 Yes, there are many monuments and museums making it a very popular place for visitors. 
 Great! Can you tell me more about its cityscape? 
 Yes, the American Institue of Architects 2007 rating of America's Favorite Architecture rate six of the top ten buildings are located there. 
 Wow, would have information about what these are? 
 Yes, The White House, The National Cathedral, Thomas Jefferson Memorial, The Capitol, Lincoln Memorial and the Vietnam Veterans Memorial. 
 Thank you for the information. This is all i need. 
 You're welcome. You might also want to know that many of the buildings design was based on plans of cities like Paris, Amsterdam, etc.
Washington, D.C.