corridors of power

A narrow hallway, passageway, or gallery, often with rooms or apartments opening onto it.

1. A tract of land forming a passageway, such as one that allows an inland country access to the sea through another country.

2. A restricted tract of land for the passage of trains.

3. Restricted airspace for the passage of aircraft.

4. The restricted path followed by a spacecraft on a particular mission.

A thickly populated strip of land connecting two or more urban areas: the Boston-Washington corridor.