The government of Washington, DC has an excellent open data resource for mappers called DCGIS that provides an incredible amount of very detailed data. (Want the coordinates of all the streetside trees in the city? They’ve got them.) This resource is free for anyone to access and use.

Inspired by the nighttime design of StumbleSafely, I set out to make a simple dark map theme for DC. It ended up looking more along the lines of something one might expect on a terminal at the CIA. All that’s missing is an overlay of complex technical data and pulsating concentric red circles.

This map style is freely available as a MapBox tileset that can be embedded in any website. The source code for this map style is also available to download and modify. Information about the additional software and data required to use the style are included in the download package.

Here is an overview of the city:

Here are the buildings and parking lots of a shopping center in Northeast DC:

Here is a view of the White House, as well of some of DC’s most well-known monuments:

Northwest DC is a great place to show off the 1-meter elevation contour lines available from DCGIS. Visible here are the Naval Observatory and the National Zoo:

All of the city’s medians and complex intersections are accurately mapped and classified. This view of Union Station illustrates the detail of the road shapes:

Visit MapBox.com for more free map styles and tools to help you build your own custom maps.