Fairfax, VA

Home of George Washington's Mount Vernon, the Internet, intelligence agencies (including CIA), government contractors, and foreign spies. Surrounds Alexandria and Arlington, home to the Pentagon, Arlington National Cemetery, and Amazon HQ2. Across the river from Washington, DC, with its monuments and free museums, and also National Harbor. The most PhDs in the USA. Median per capita income is fifth highest in the US: $83K/year, $7K/month. 40% of Fairfax County residents speak a language other than English at home, more than 200 different languages. Temperate with four seasons: some snow in winter, cherry blossoms in spring, hot steamy summers, fall colors. Mostly suburban, with high density in Arlington, Alexandria, and Tyson's Corner. Mainly car centric, but the Washington Metro is excellent. Nightlife hotspots in DC and Clarendon, with some in historic town centers, and urban islands like Reston Town Center, The Boro, or Mosaic District.