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  2. Boundary markers of the original District of Columbia

    en.wikipedia.org/wiki/Boundary_Markers_of_the...

    Map of the boundary stones. The District of Columbia (initially, the Territory of Columbia) was originally specified to be a square 100 square miles (260 km 2) in area, with the axes between the corners of the square running north-south and east-west, The square had its southern corner at the southern tip of Jones Point in Alexandria, Virginia, at the confluence of the Potomac River and ...

  3. National Register of Historic Places listings in Ohio

    en.wikipedia.org/wiki/National_Register_of...

    Ohio counties (clickable map) This is a list of properties and districts in Ohio that are listed on the National Register of Historic Places. There are over 4,000 in total. Of these, 73 are National Historic Landmarks. There are listings in each of Ohio's 88 counties.

  4. List of National Historic Landmarks in Washington, D.C.

    en.wikipedia.org/wiki/List_of_National_Historic...

    Elliott Coues, a leading 19th century ornithologist, led great expansions of the knowledge of North American bird life, helped found the American Ornithologists' Union in 1883, edited approximately 15 volumes of journals, memoirs, and diaries by famous Western explorers and fur traders. He lived in this house from 1887 until his death in 1899. 20

  5. Pennsylvania Avenue National Historic Site - Wikipedia

    en.wikipedia.org/wiki/Pennsylvania_Avenue...

    Pennsylvania Avenue and 7th Street in 1839 with the First Unitarian Church on the northeast corner of 6th Street and Pennsylvania Avenue visible in the background. Prior to the settlement of the area by European colonists, the Piscataway tribe of Native Americans occupied the northeastern banks of the Potomac River, although no permanent settlements are known in the area now encompassed by the ...

  6. National Register of Historic Places listings in Washington, D.C.

    en.wikipedia.org/wiki/National_Register_of...

    This is a list of properties and districts in Washington, D.C., on the National Register of Historic Places.There are more than 600 listings, including 74 National Historic Landmarks of the United States and another 13 places otherwise designated as historic sites of national importance by Congress or the President.

  7. Chesapeake and Ohio Canal National Historical Park

    en.wikipedia.org/wiki/Chesapeake_and_Ohio_Canal...

    The park was established in 1961 as a National Monument by President Dwight D. Eisenhower to preserve the neglected remains of the Chesapeake and Ohio Canal and many of its original structures. The canal and towpath trail extends along the Potomac River from the Georgetown section of Washington, D.C. , to Cumberland, Maryland , a distance of ...

  8. Putnam Historic District - Wikipedia

    en.wikipedia.org/wiki/Putnam_Historic_District

    Putnam Historic District, located in Zanesville, Ohio, was an important center of Underground Railroad traffic and home to a number of abolitionists. The district, with private residences and other key buildings important in the fight against slavery, lies between the Pennsylvania Central Railroad, Van Buren Street, and Muskingum River. [2]

  9. National Register of Historic Places listings in the upper NW ...

    en.wikipedia.org/wiki/National_Register_of...

    This is a list of properties and districts listed on the National Register of Historic Places in the Northwest quadrant of Washington, D.C. that are both east of Rock Creek and north of M Street. This National Park Service list is complete through NPS recent listings posted November 29, 2024. [1]