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Metro D Route pocket track [01]
![Metro D Route pocket track [01]](../../i/upload/2024/07/14/20240714235123-98bd274e-cu_s9999x250.jpg "Metro D Route pocket track [01] (1941 visits) D Route pocket track on the Washington Metro system, showing the interlockings and the signal. This ...")
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Greenbelt interlocking
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College Park interlocking [01]
![College Park interlocking [01]](../../i/upload/2024/07/15/20240715141119-0c23af03-cu_s9999x250.jpg "College Park interlocking [01] (1478 visits) Interlocking south of the College Park-University of Maryland station, on the Green Line of the Wash...")
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College Park interlocking [02]
![College Park interlocking [02]](../../i/upload/2024/07/15/20240715141123-5fa6adc8-cu_s9999x250.jpg "College Park interlocking [02] (2195 visits) Interlocking south of the College Park-University of Maryland station, on the Green Line of the Wash...")
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East Falls Church interlocking
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Largo interlocking
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Vienna interlocking
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Metro D Route pocket track [02]
![Metro D Route pocket track [02]](../../i/upload/2024/07/15/20240715141423-2fe25243-cu_s9999x250.jpg "Metro D Route pocket track [02] (2142 visits) D Route pocket track on the Washington Metro system, showing the interlockings and the signal. This ...")
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Silver Spring pocket track
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Largo Town Center interlocking
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Eisenhower Avenue interlocking
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Acela Express door mode switch
![Acela Express door mode switch](../../i/upload/2024/07/16/20240716231527-66913270-cu_s9999x250.jpg "Acela Express door mode switch (1977 visits) Door mode switch on Acela Express trains. The switch is set in the "open" position.
Ben ...")
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Light switch at Lorton Reformatory
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Scott's House [45]
![Scott's House [45]](../../i/upload/2024/07/18/20240718213401-f4c41845-cu_s9999x250.jpg "Scott's House [45] (1138 visits) “Scott’s House” is an abandoned two-story wood-framed house in a wooded area near Elkridge, Ma...")
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Edwards fire alarm pull station
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White's Ferry alarm switch
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Interlocking signal at Sheppard-Yonge
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Fire alarm pull station at 2 Pidgeon Hill Drive [01]
![Fire alarm pull station at 2 Pidgeon Hill Drive [01]](../../i/upload/2024/07/19/20240719155328-cc5e1d45-cu_s9999x250.jpg "Fire alarm pull station at 2 Pidgeon Hill Drive [01] (1151 visits) Simplex fire alarm pull station at 2 Pidgeon Hill Drive in Sterling, Virginia.
Ben Schumin is a pro...")
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Fire alarm pull station at 2 Pidgeon Hill Drive [02]
![Fire alarm pull station at 2 Pidgeon Hill Drive [02]](../../i/upload/2024/07/19/20240719155333-d3596d21-cu_s9999x250.jpg "Fire alarm pull station at 2 Pidgeon Hill Drive [02] (1138 visits) Simplex fire alarm pull station at 2 Pidgeon Hill Drive in Sterling, Virginia.
Ben Schumin is a pro...")
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Penthouse at Hotel 24 South [19]
![Penthouse at Hotel 24 South [19]](../../i/upload/2024/07/19/20240719160651-5a2c03b8-cu_s9999x250.jpg "Penthouse at Hotel 24 South [19] (1948 visits) Light switch in the penthouse at Hotel 24 South, formerly the Stonewall Jackson Hotel, in downtown S...")
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Penthouse at Hotel 24 South [20]
![Penthouse at Hotel 24 South [20]](../../i/upload/2024/07/19/20240719160656-b9845a2e-cu_s9999x250.jpg "Penthouse at Hotel 24 South [20] (1988 visits) Light switch in the penthouse at Hotel 24 South, formerly the Stonewall Jackson Hotel, in downtown S...")
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Wheelock Safepath Remote Microphone Station
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Buckingham Branch track in downtown Staunton [01]
![Buckingham Branch track in downtown Staunton [01]](../../i/upload/2024/07/19/20240719164202-0ee0831d-cu_s9999x250.jpg "Buckingham Branch track in downtown Staunton [01] (2288 visits) Track for the Buckingham Branch railroad in downtown Staunton, Virginia, on the bridge that carries ...")
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Buckingham Branch track in downtown Staunton [02]
![Buckingham Branch track in downtown Staunton [02]](../../i/upload/2024/07/19/20240719164207-8c61d1c6-cu_s9999x250.jpg "Buckingham Branch track in downtown Staunton [02] (2308 visits) Track for the Buckingham Branch railroad in downtown Staunton, Virginia, just east of the bridge tha...")
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"Don't turn on this heater"
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Interlocking outside of Ashburn station
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Manual track switch
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Light switch at Shaffer's Barbecue
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Tower 18 interlocking [01]
![Tower 18 interlocking [01]](../../i/upload/2024/11/15/20241115185613-f02c209c-cu_s9999x250.jpg "Tower 18 interlocking [01] (6348 visits) Tower 18 interlocking, a three-quarter union at the northwestern corner of the Loop in the downtown ...")
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Tower 18 interlocking [02]
![Tower 18 interlocking [02]](../../i/upload/2024/11/15/20241115185621-7128aab3-cu_s9999x250.jpg "Tower 18 interlocking [02] (542 visits) Tower 18 interlocking, a three-quarter union at the northwestern corner of the Loop in the downtown ...")
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Tower 18 interlocking [03]
![Tower 18 interlocking [03]](../../i/upload/2024/11/15/20241115185626-e65cbb45-cu_s9999x250.jpg "Tower 18 interlocking [03] (1597 visits) Tower 18 interlocking, a three-quarter union at the northwestern corner of the Loop in the downtown ...")
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Tower 18 interlocking [04]
![Tower 18 interlocking [04]](../../i/upload/2024/11/15/20241115185634-5eee462c-cu_s9999x250.jpg "Tower 18 interlocking [04] (1597 visits) Tower 18 interlocking, a three-quarter union at the northwestern corner of the Loop in the downtown ...")
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Tower 18 interlocking [05]
![Tower 18 interlocking [05]](../../i/upload/2024/11/15/20241115185641-68b75281-cu_s9999x250.jpg "Tower 18 interlocking [05] (1593 visits) Tower 18 interlocking, a three-quarter union at the northwestern corner of the Loop in the downtown ...")
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Tower 18 interlocking [06]
![Tower 18 interlocking [06]](../../i/upload/2024/11/15/20241115185651-90db4034-cu_s9999x250.jpg "Tower 18 interlocking [06] (1583 visits) Tower 18 interlocking, a three-quarter union at the northwestern corner of the Loop in the downtown ...")
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Tower 18 interlocking [07]
![Tower 18 interlocking [07]](../../i/upload/2024/11/15/20241115185705-7174effa-cu_s9999x250.jpg "Tower 18 interlocking [07] (1595 visits) Tower 18 interlocking, a three-quarter union at the northwestern corner of the Loop in the downtown ...")
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Tower 18 interlocking [08]
![Tower 18 interlocking [08]](../../i/upload/2024/11/15/20241115185721-0b59ccae-cu_s9999x250.jpg "Tower 18 interlocking [08] (1603 visits) Tower 18 interlocking, a three-quarter union at the northwestern corner of the Loop in the downtown ...")
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Elevator at Sherman Garden Apartments [02]
![Elevator at Sherman Garden Apartments [02]](../../i/upload/2024/11/16/20241116012112-9677f67e-cu_s9999x250.jpg "Elevator at Sherman Garden Apartments [02] (478 visits) Car operating panel in an elevator at Sherman Garden Apartments, a cooperative housing community in ...")
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Energy saving reminder on light switch plate [01]
![Energy saving reminder on light switch plate [01]](../../i/upload/2024/12/30/20241230200008-04c48459-cu_s9999x250.jpg "Energy saving reminder on light switch plate [01] (417 visits) Decal on a light switch plate reminding building occupants to turn off lights when not in use in ord...")
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Energy saving reminder on light switch plate [02]
![Energy saving reminder on light switch plate [02]](../../i/upload/2024/12/30/20241230200013-eef7389d-cu_s9999x250.jpg "Energy saving reminder on light switch plate [02] (422 visits) Decal on a light switch plate reminding building occupants to turn off lights when not in use in ord...")
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Energy saving reminder on light switch plate [03]
![Energy saving reminder on light switch plate [03]](../../i/upload/2024/12/30/20241230200018-bcf75d2e-cu_s9999x250.jpg "Energy saving reminder on light switch plate [03] (433 visits) Decal on a light switch plate reminding building occupants to turn off lights when not in use in ord...")