On Tuesday, we featured the 157th challenge to see how well you know the Metro system. Here are the answers. How’d you do?

This week, we got eight guesses. Four of you got all five. Great work AlexC, ArlFfx, Peter K, and Jay H!

Image 1: National Airport

The first image was pretty straightforward for anyone who’s ever taken the Metro to National Airport. This view looks away from the distinctive terminal, facing the (also distinctive) airport parking structure. The towers of Crystal City are visible behind the garage.

Eight of you knew this one.

Image 2: Brookland

Brookland was the focus of the second image. This photo looks toward the station’s western entrance from the Arts Walk. The supports for the large sign with the vertical Arts Walk text are in the foreground, framing the escalator entrance. The Michigan Avenue bridge is visible above the escalator canopy.

Six of you got this one right.

Image 3: Federal Triangle

The third image was a little trickier. It shows a short intermediate concourse between two sets of in-line escalators. A few of you thought this was Crystal City, which does have a short concourse between the street escalators and the escalators down to the mezzanine. But that hallway is significantly longer. Clarendon and Woodley Park also have an arragement like this, though at Clarendon, there’s a stairway between the up and down escalators, and at Woodley Park, there’s no junction in the concourse (there is a knock-out panel for a future entrance on the east side of Connecticut, though it isn’t visible).

But in all of those cases, the walls are quite different. Unlike virtually every Metro entrance passage, the pictured walls aren’t made of bare concrete. They’re made of stone. That’s because they are part of the EPA Building, which the station entrance is embedded in.

The distant escalators are also noticably short. It’s not just an artifact of the camera’s focal length. They actually are short escalators. The shortest in the system.

Four of you figured this one out.

Image 4: Friendship Heights

The fourth image looks up at the skylight above the main entrance to Friendship Heights station. This is part of the Chevy Chase Metro Building, which sits atop the bus loop at Friendship Heights’ northern (Western Ave) entrance. An artwork hangs from the ceiling, adding some texture to the space.

Five of you guessed correctly.

Image 5: Anacostia

The final image comes from Anacostia’s northern entrance. This entrance only provides access to the parking garage, in which the northern entrance is integrated. This vantage point looks toward the station entrance from the garage’s stair tower.

Five of you came to the correct conclusion.

Great work, everyone. Thanks for playing! We’ll be back in two weeks with challenge #158.

Information about contest rules and submission guidelines is available at http://ggwash.org/whichwmata.

Matt Johnson has lived in the Washington area since 2007. He has a Master’s in Planning from the University of Maryland and a BS in Public Policy from Georgia Tech. He lives in Dupont Circle. He’s a member of the American Institute of Certified Planners, and is an employee of the Montgomery County Department of Transportation. His views are his own and do not represent those of his employer.