Yes. I work in Crystal City. Here is the web site: [url]http://www.crystalcity.com/[/url]. The site includes a detailed color map.
Crystal City is actually a series of high rise office buildings, shops, restaurants & delis, hotels and apartments in Northern Virginia just over the border with Washington DC, extending north and south along Hwy 1. The entire length of the City includes a rabbit warren of underground shops and stores. Crystal City is directly adjacent to Ronald Reagan National Airport, so I recommend you fly in here. It's a $5 cab ride to your local hotel or office here, or you can jump on the Metro Blue or Yellow line north for one stop for $1.10.
Getting here from Dulles airport or Baltimore Washington will be a long and tortuous drive, depending on the time of day.
The northern end of Crystal City is about 1/2 mile from the Pentagon (We heard and felt the plane crash into the Pentagon.).
There is a large, modern, up-scale, indoor shopping center one Metro stop away at Pentagon City.
The Washington Metro is one of the finest subway systems in the world. Crystal City is served by one station. The Metro can take you wherever you want to go in the immediate area, including downtown DC to the National Capital area. Metro has a web site too.
Tons to do and see here. A bit of advice...do not walk around DC after dark alone...or even in small groups of 2-3. It can be a combat zone.
Rush hour in the DC area here can be a bit daunting, so allow yourself pleny of time if you're driving.
Good Luck!