Harvard Student Agencies, headquartered in Cambridge, MA, is the largest student-run company in the world. Every summer since 1960, HSA has dispatched Harvard's sharpest, most tena...view moreHarvard Student Agencies, headquartered in Cambridge, MA, is the largest student-run company in the world. Every summer since 1960, HSA has dispatched Harvard's sharpest, most tenacious students to Europe to get their candid takes and irreverent commentary on seeing the world.view less