"I had my dad with me," the 6-foot-9, 185-pound power forward added. "We did a lot the first time, we didn't do too much new."
Johnson, a standout at Cordova (S.C.) Edisto, said one of the highlights of the trip was taking in North Carolina's football game.
"Yeah I went to the game and I chilled with some of the players," he said. "I chilled with all of them."
Johnson's mentor and travel coach – Dion Bethea – was at North Carolina on Saturday with him.
"I went down Saturday and went to the football game and I watched those guys play (pickup)," Bethea said. "That was pretty much it. I wanted his dad to experience some of that stuff with him."
Johnson was courtside to watch the current team and many former players faceoff in pick and then met with Roy Williams about how he fits into their system.
"We were just talking about how I would fit in and he said I'd have a good chance to start, but I'd have to work at it," Johnson said.
"Set screens and play in the high post," Johnson replied, when asked how he would be used in UNC's offense. "He just wants me to play all around and do what I can to help the team."
So what were Johnson's overall impressions of Carolina after his official visit?
"It's a great school," Johnson said. "It's in a great league too."
"If he had some concerns he would have brought them to me or his dad," Bethea said. "It was a pretty good visit because he didn't have any negatives. I know he enjoyed his time on campus."
With trips to North Carolina State and UNC complete, Johnson is now scheduled to visit the third of his current frontrunners, Florida, on October 1st. He said he wouldn't rule out other visits as well.
"I'm still trying to set up times to visit South Carolina and Clemson, but I don't know if I'll have time," said Johnson, who has been eying the month of October for a decision.
"I think he's probably going to end up visiting Clemson and South Carolina," Bethea added.