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| | Articles - Washington Metro |
 | | The network was designed with a spoke-hub distribution paradigm, which makes the subway ideal for getting from a suburb to any part of the city, or vice versa, but unattractive for suburb-to-suburb travel; a Purple Line has been occasionally proposed to remedy this (see below). |
 | | The system is not centered on any single station, but Metro Center is considered the hub, as it is the busiest station, located at the intersection of the three busiest lines, and the Metro Information Center and Gift Shop are located there. |
 | | However, the deepest stations in the system are not in Washington, but at the northeastern end of the Red Line, with Wheaton having the longest escalator in the western hemisphere at 230 feet (70 meters), and Forest Glen being even deeper than that; so deep, the only way to the surface is by elevator. |
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