Thanks for the photos, OrigamiOwl. How many people go to your uni? Is it a 4-year college (awarding bachelor's degrees)?
Here in the U.S., colleges come in all sizes and shapes. The big ones that so astonish you tend to be state (public) universities, because the 50 states that run them have an interest in producing large numbers of educated people, and there are economies of scale. They also tend to be larger because they have graduate divisions, medical/vet/dentistry schools, MBA programs, etc.
Some have more than 50,000 students!For example,
University of South Carolina - Columbia (so called to distinguish it from several other SC campuses) has about 24,000 undergrads and 7,500 graduate students. (I'm not sure if this is Eich's alma mater or not.)
Private colleges tend to have fewer students and a lower student-to-teacher ratio. My alma mater,
Smith College, a women's college in New England, has 2,600 undergrads (plus about 100 grad students) -- large for a women's college, medium-sized for any private liberal-arts college. The campus is so beautiful, especially in spring and fall; it's a real selling point for prospective students.
Stanford, the most notable college near where I live, has about 7,000 undergrads, 9,000 grad students, and
more money than most Third World nations.