On Tuesday, we posted our fifty-first photo challenge to see how well you know Metro. I took five photos in the Metro system. Here are the answers. How well did you do?

This week, we got 19 guesses. Five of you got all five. Great work, Peter K, Patrick, MZEBE, Mr. Johnson, and Justin….!

Image 1: Tysons Corner

The first image shows the lower level entrance at Tysons Corner station. Most of you were able to immediately recognize that this was a Silver Line station based on the newness, the signage, and the design finishes. But the only station that has a “spiral” staircase like this is Tysons Corner.

Several of you guessed McLean and Spring Hill because they have mezzanines below the tracks, and the arrangement here clearly directs passengers up to trains. But while Tysons Corner’s mezzanine is above the tracks, there is an entrance underneath, which is a unique arrangement in the system. Riders entering here go up two levels (with an escalator landing (featured in week 20) to the mezzanine and then back down to trains.

Update: The number of correct answers was inadvertently deleted during editing. Thirteen people guessed correctly on this clue.

Image 2: Dunn Loring

This picture shows the platform at Dunn Loring. The main clue here is the bridge in the distance. It’s a ramp that carries traffic from the northbound HOT lanes on I-495 to the westbound HOV lane on I-66. It passes over the Orange Line just east of the platform. Because of the ramp, the wall on the left is much taller than the wall on the right side. It also slopes down along with the ramp.

Even without the added height for the ramp, the walls at Dunn Loring and East Falls Church are much higher than the platform walls at other stations, mainly to block out the noise from traffic along I-66. Fifteen of you got this one correct.

Image 3: Rhode Island Avenue

The third image shows the bridge from the north side of Rhode Island Avenue to the eponymous station. The bridge crosses the street on a slope, and is directly underneath the platform. The rounded fencing gives it a distinctive shape. The circular ramp where the bridge lands on the north side was featured in week 44. Fourteen of you figured this one out.

Image 4: Anacostia

For the fourth image, you needed to reflect on things to find the answer. There were two main clues. First, since this is clearly a subway station (given the lighting), it has to be Anacostia, because that’s the only underground station that has straight walls next to the tracks. The rest of the underground stations have vaulted walls.

But the primary clue is the ceiling, which is reflected at top left and top center. Anacostia has a unique ceiling with small semicircular mini-vaults running perpendicular to the tracks. It’s one of the unique stations in the system, and we featured it in week 7, week 8, and week 21. Fourteen of you reflected correctly.

Image 5: Shady Grove

The final image shows the eastern entrance to Shady Grove. The watercourse here, Crabbs Branch, runs through a small greensward between the north parking garage and the east bus loop, and it seems to come straight out of the eastern entrance. It’s not the only waterway near a Metro entrance, but it’s probably the most obvious one. If you didn’t recognize it, it’s also clearly visible on aerial images.

At far left, you can just see a stairwell for the north garage. Only five of you (the same five that got all five) figured this one out. Better luck next time!

Thanks to everyone for playing! Great work. Stay tuned. We’ll have five more images for you next week.

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.