On Tuesday, we posted our fifty-seventh 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 18 guesses. Two people got all five. Great work, Peter K and Mr. Johnson!

Image 1: Potomac Avenue

This week is a very special set. For all five stations in this set, it’s the first time being featured. These were the only stations we hadn’t featured yet. So with this set, we’ve now featured every station.

The first image is Potomac Avenue. You had two pieces of information here and you needed to put them together to solve the riddle. The first part of the clue is the station name, which you can see ends with the letters “ve.” In this case, they’re the last two letters of the word “Ave.” While there are several stations that end with the letters “ve” (like Shady Grove and Rhode Island Ave), it can’t be any of those because of the second part.

You can see from the background that this is an underground station with a waffle vault. The only station that meets these two criteria is Potomac Avenue. Fifteen figured it out.

Image 2: Congress Heights

The second image shows the main entrance to Congress Heights station. As Peter K noted in his answer, there are three stations with the bland, flat walls on either side of the escalators. But this bank of escalators has something that Georgia Avenue and Columbia Heights don’t have: fluorescent bulbs behind a valence. Only Congress Heights has this feature. The arrangement of the escalators (three side-by-side units, with a staircase to the left) is also unique here.

Only two got this one right.

Image 3: Deanwood

This picture shows the western entrance to Deanwood. The winged concrete walls on either side of an unadorned entrance is repeated at only one other station. But in this case, you can narrow it down to Deanwood because of the catenary supports visible at top right.

The CSX tracks here are no longer electrified, but until the early 1980s, Conrail, the successor to Penn Central and the Pennsylvania Railroad, still ran freight trains behind electric locomotives. The electrification went all the way from New Haven to Potomac Yard. In the Washington area, the electrification split, with one line going through Union Station (which is where Amtrak trains currently run) and the other line going alongside the Orange Line. The two lines met again at Virginia Tower, near L’Enfant Plaza.

Six knew this one.

Image 4: Tenleytown

This picture shows the platform elevator at Tenleytown. The picture shows a faregate and an exitfare machine on the platform, which indicates that the street elevator goes directly to the platform. In this case, that was done so that the elevator would emerge close to the escalators. Attaching it to the mezzanine would mean the elevator would be some distance from escalator entrance (as is the case at Bethesda).

You can tell from the picture that this is an Arch I station. Arch I stations are distinguished because they only have four coffers (two on each half of the vault). Of the seven Arch I stations, the only one that has an elevator that goes straight to the platform (as opposed to stopping at the mezzanine) is Tenleytown. Twelve got the right answer.

Image 5: Suitland

The final image shows the roof at Suitland station. The angle indicates that this is one of the four high peak stations. But unlike the other three, the skylights at Suitland are very shallow. At Franconia, Southern Avenue, and Branch Avenue, the skylights slope at about 45 degrees from horizontal. Here, they’re much shallower.

Five got this one correct.

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.