If languages are your specialty, you may be interested in seeing the language lab. If there are fraternity or sorority houses on campus, you may want to see one of these too. If a student guide accompanies you on your tour, feel free to ask about any aspects of college life. They will no doubt welcome some clues about your interests, sports, etc., and may include a visit to the headquarters of such activities if time permits. This is up to you.
Parents are often interested in seeing their children's prospective colleges.
Most colleges welcome parents. However, when they interview a candidate, they like to have some time alone with the student. If parents are helping to foot the bill, surely they should be included in your tour. After Your Visit Make some notes on your reactions to the college. They will be useful later, when you are trying to evaluate various instructions and they may suggest some additional points for discussion with your guidance counselor or parents.