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THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
 
 
 
 
 
 
16 entries match your criteria.  

 
 

Historical Markers in Seneca

 
Clickable Map of Montgomery County, Maryland and Immediately Adjacent Jurisdictions image/svg+xml 2019-10-06 U.S. Census Bureau, Abe.suleiman; Lokal_Profil; HMdb.org; J.J.Prats/dc:title> https://commons.wikimedia.org/wiki/File:Usa_counties_large.svg Montgomery County, MD (778) Frederick County, MD (692) Howard County, MD (173) Prince George s County, MD (679) Washington, DC (2890) Arlington County, VA (515) Fairfax County, VA (745) Loudoun County, VA (390)  MontgomeryCounty(778) Montgomery County (778)  FrederickCounty(692) Frederick County (692)  HowardCounty(173) Howard County (173)  PrinceGeorge'sCounty(679) Prince George's County (679)   D.C.(2890) Washington (2890)  (515) Arlington County (515)  FairfaxCounty(745) Fairfax County (745)  LoudounCounty(390) Loudoun County (390)
Rockville is the county seat for Montgomery County
Seneca is in Montgomery County
Montgomery County (778)  ►
ADJACENT TO MONTGOMERY COUNTY
Frederick County (692)  ►
Howard County (173)  ►
Prince George's County (679)  ►
Washington, D.C. (2890)  ►
Arlington County, Virginia (515)  ►
Fairfax County, Virginia (745)  ►
Loudoun County, Virginia (390)  ►
 
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1 ► Maryland, Montgomery County, Seneca — The Historic Seneca Schoolhouse —
On River Road.
2 ► Maryland, Montgomery County, Seneca — Planetary Radio Emissions Discovery Site —
On River Road west of Seneca Road (Maryland Route 112).
3 ► Maryland, Montgomery County, Seneca — Rowser’s Ford —
On Violettes Lock Road at River Road (Maryland Route 190), on the left when traveling south on Violettes Lock Road.
4 ► Maryland, Montgomery County, Seneca — Rowser’s Ford — 5,000 Confederate Cavalrymen Crossed — Gettysburg Campaign —
On Rileys Lock Road south of River Road, on the right when traveling south.
5 ► Maryland, Montgomery County, Seneca — Seneca
On River Road at Tschiffely Mill Road, on the left when traveling west on River Road. Reported missing.
6 ► Maryland, Montgomery County, Seneca — Seneca — Chesapeake and Ohio Canal National Historical Park — National Park Service, U.S. Department of the Interior —
On Riley's Lock Road.
7 ► Maryland, Montgomery County, Seneca — The Seneca Aqueduct
On Rileys Lock Road south of River Road, on the right when traveling south. Reported missing.
8 ► Maryland, Montgomery County, Seneca — Seneca: “Average Man’s Resort” —
On Rileys Lock Road south of River Road, on the right when traveling north.
9 ► Maryland, Montgomery County, Seneca — Seneca Creek: “A Raging River” —
On Rileys Lock Road south of River Road, on the left when traveling south.
10 ► Maryland, Montgomery County, Seneca — Seneca Mill —
On Old River Road.
11 ► Maryland, Montgomery County, Seneca — Seneca Mills During the Civil War —
Near Old River Road north of River Road, on the right when traveling north.
12 ► Maryland, Montgomery County, Seneca — Seneca Schoolhouse —
On River Road.
13 ► Maryland, Montgomery County, Seneca — Seneca Store —
On Old River Road at River Road, on the right on Old River Road.
14 ► Maryland, Montgomery County, Seneca — Seneca Store —
On Old River Road.
15 ► Maryland, Montgomery County, Seneca — A Veteran’s Life in Montgomery County — post-1865 —
Near Old River Road.
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16 ► Maryland, Montgomery County, Seneca — Watering the Canal — Chesapeake and Ohio Canal National Historical Park — National Park Service, U.S. Department of the Interior
Near Violette's Lock Road, on the right when traveling south. Reported missing.
 
 
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Nov. 11, 2026