The Brooklyn Tech junior was seen taking a private tour of freshman dorms and walking through campus on Saturday, according to the student-run blog Bwog.
Dante, 16, toured with both of his parents and stopped to chat with students and indulge in some snapshots with fans, the blog reported.
Last Monday, during his school vacation, Dante made a visit to Wesleyan University in Middletown, Conn., the Daily News reported.
“It’s exciting to see through his eyes as he looks at schools and think about his future ahead," the mayor said of his son's Wesleyan tour. De Blasio said he was very impressed with the liberal arts school.
During their tour of Columbia University, the de Blasios also checked out the neighborhood, strolling near Riverside Park, Bwog reported.
The Mayor's Office did not immediately return a request for comment on what other stops the spring college tour might include, but de Blasio has said his son is still undecided about a top choice.
Columbia University did not immediately respond to request for comment.