Holt made the visit with his coach and Indianapolis (Ind.) Warren Central teammate Nick Temple. The trio drove to Chapel Hill on Tuesday and remained on campus until Wednesday evening.
"They really have good players there," Holts said. "The coaching staff is really funny and really good to be around."
Prior to the visit, Holts, who has received nearly 30 scholarship offers, narrowed his focus to a dozen schools – Arkansas, Cincinnati, Florida, Michigan State, Mississippi, UNC, Oregon, Purdue, Southern Cal, Tennessee, UCLA, and Virginia Tech.
"[UNC] is probably in my top five now [after visiting]," Holts said. "Before they were in the top five, but now they're higher in the top five."
Holts' favorites list grew to 13 on Friday when Auburn offered and joined the grouping.
Early in the football season, Holts will make a verbal commitment. He says he probably won't narrow his list of favorite schools down any further before committing.
"I'll focus on the coaches, especially my position coach," Holts said.
Holts spent a great deal of time with UNC's offensive line coach, Sam Pittman, during his visit.
"He just talked about how it's a good place to be and how much they need me," Holts said. "Most of the time we weren't even talking about football. We just talked about other stuff like fishing."
Holts also spent a lot of time with UNC's players, particularly fellow offensive linemen Jonathan Cooper and James Hurst. Hurst, like Holts, is an Indianapolis native and was a big time offensive lineman recruit.
Throughout his stay, Holts had several conversations with Butch Davis.
"[He discussed] how it's a great place and he would like me to come there," Holts said.
Holts also learned UNC's recruiting situation at offensive line.
"They told me that I was their top offensive lineman that they needed and wanted," Holts said. "They need a lot of offensive linemen [in this class]."
Besides UNC, Holts has visited Cincinnati, Indiana, Louisville, Purdue, and Virginia Tech.
Next weekend, Holts will visit Florida. He said he also hopes to visit Arkansas sometime soon.