The Amish have preserved their way of life from the past century. Try driving off the main roads on to local roads for the best views. Campus arts and exhibits and movies. Princeton Art Museum on campus. They do not have space to exhibit most of their huge collection, so they rotate between their exhibits.
Entry is free.
McCarter Theater . Featuring plays, dance, music. They sell discounted tickets to Princeton students, and occasionally, half-price rush tickets. The famous Westminster Choir college is in Princeton and has many performances. Various music, dance, and other performances at the University.