The undergraduate college of the US Navy is one of the most selective universities in America. The Armel-Leftwich visitor center is the place to book tours and immerse yourself in all things Academy-related. Come for the formation weekdays at 12:05pm sharp, when the 4000 midshipmen and -women conduct a 20-minute military marching display in the yard. Photo ID is required for entry. If you've got a thing for American naval history, revel in the Naval Academy Museum .