The hardest college major is Architecture. Architecture majors spend an average of 22.2 hours a week preparing for classes, two hours each week, more than chemical engineering students spend. To major in architecture, you need to study courses like calculus, physics, design processes, design theory, history of architecture, urban design, and art history. Students who want to pursue this field need to be ready to spend hours drafting and studying. Upon graduating, your job prospects are fairly narrow because your skills are specialized.