About 300 people -- including state and local officials and county residents -- attended the ceremony in front of the older Orange County Courthouse.
The event honored the 250th anniversary of the first colonial court, the oldest government in Orange County.
At noon, bells all across the county chimed to celebrate the occasion.
The ceremony included traditional music from the string group Mappamundi and statements from UNC Chancellor James Moeser, N.C. novelist Lee Smith and state Sen. Howard Lee, D-Orange.
Standing before the audience with fellow state Sen. Ellie Kinnaird, D-Orange, Lee praised the county's representation in the General Assembly by both a woman and a black man -- symbolic of Orange County's diversity, he said.
"Two hundred and fifty years ago, I'm not sure either one of us would have been invited to this podium," he said.
Dianne Reid, director of the Orange County Economic Development Commission, said organizers designed the event to celebrate the past and prepare for the future.
"Really the people that will remember this 50 years from now are sitting on the grass here," she said, referring to almost 150 students from Cameron Park Elementary School in Hillsborough packed into clusters on the lawn.
Cameron Park fourth-grade teacher Judy Pounds said the ceremony was a hands-on opportunity for her students to experience their state history curriculum. "Maybe one day these kids will take part (in similar activities) through a legacy," Pounds said.