I just moved to D.C. 6 months ago, I enjoy the balance of cosmopolitan accessibility - public transportation, international business, of cuisine from multi-cultural fusion. The access to historical information is unmatched compared to any other cities in the US. I highly recommend touring the monuments on a bike. Touring by bus is impersonal, and touring on foot can be exhausting; there are plenty of bike tour companies that will guide you, while also allowing you to stop, admire, and take pictures by the monuments. Then there's the free Smithsonian Museums - you could spend all day in one and still have not seen all of its exhibits. If you're just visiting, I recommend picking 2-3 museums you'd like to see, and set aside at least 3 hours for each. If you're looking to move here, it is a great scene for young professionals. There are plenty of restaurants, bars, grocery stores, places of worship, and fitness facilities that saturate the city.