Inside the world's largest college dorm, a 1.4 million-square-foot Naval Academy building with over 4,600 beds and its own ZIP code

Bancroft Hall at the US Naval Academy in Annapolis, Maryland. Jonathan L. Correa/Planet Pix/ZUMA Wire via Reuters Connect Bancroft Hall at the US Naval Academy is the largest single college dormitory in the world. It features 4,663 beds, 33 acres of floor space, and 4.8 miles of hallways. Rules govern which doors midshipmen are allowed to walk through and how they organize their rooms. Bancroft Hall at the US Naval Academy in Annapolis, Maryland, is named for former Navy Secretary George Bancroft, but to the midshipmen who call the dormitory home, it is affectionately known as "Mother B." The largest single college dormitory in the world, Bancroft Hall, houses all roughly 4,400 midshipmen throughout their four years of study at the elite military academy. Bancroft Hall's center section and first two wings, designed by Ernest Flagg, a Beaux-Arts architect known for his grand, classical designs, were completed in 1908.