Open Travel Guide
History of Ohio

Ohio History & Heritage Guide 2026

The history of Ohio told through its places: sites worth the detour and the context they need.

Ohio has 5+ historical sites covered in this guide, led by Serpent Mound, Newark Earthworks and Ohio History Center and Ohio Village. Each entry below includes the practical details — what it costs, when to go, and how to plan around it.

Ohio is a Midwestern state at the heart of American culture, birthplace of eight U.S. presidents, and home to the Rock and Roll Hall of Fame, Pro Football Hall of Fame, and Cedar Point — the 'Roller Coaster Capital of the World.' From Cleveland's revitalized lakefront to Columbus's thriving Short North arts district, Cincinnati's unique chili culture, and the breathtaking caves and waterfalls of Hocking Hills, Ohio offers remarkable variety for every traveler.

Historical timeline

Key moments that shaped Ohio.

  1. 1

    Hopewell culture constructs massive earthwork complexes across Ohio including the Newark Earthworks

    c. 300 BCE–500 CE
  2. 2

    Northwest Ordinance passed — Ohio organized as free territory (no slavery permitted)

    1787
  3. 3

    Ohio becomes the 17th US state; Chillicothe serves as first state capital

    1803
  4. 4

    Ohio & Erie Canal connects Lake Erie and the Ohio River, transforming trade and settlement

    1825
  5. 5

    Morgan's Raid — last Confederate incursion into Ohio during the Civil War

    1863
  6. 6

    John D. Rockefeller founds Standard Oil in Cleveland

    1870
  7. 7

    Wright Brothers (Dayton, OH) achieve first controlled powered airplane flight at Kitty Hawk

    1903
  8. 8

    Cuyahoga River catches fire in Cleveland — catalyzes the Clean Water Act and environmental movement

    1969
  9. 9

    Rock and Roll Hall of Fame opens in Cleveland

    1995

Historical sites

Places where Ohio's past comes alive.

Historic

Serpent Mound

Where: Peebles, Adams County

Admission: Adults $8, Children (5–12) $5

Historic

Newark Earthworks

Where: Newark, Licking County

Admission: Adults $8, Children (5–12) $4

Historic

Ohio History Center and Ohio Village

Where: Columbus

Admission: Adults $16, Children (3–17) $11

Historic

National Underground Railroad Freedom Center

Where: Cincinnati

Admission: Adults $18, Children (3–12) $12

Historic

James A. Garfield National Historic Site

Where: Mentor

Admission: Adults $10, Children (15 and under) free