<p>You may want to check this out … [Visiting</a> Columbia | Columbia University in the City of New York](<a href=“http://www.columbia.edu/content/visiting-columbia.html]Visiting”>http://www.columbia.edu/content/visiting-columbia.html). The FAQs include a description of weekend visits (not much is open). The campus is not very big so you easily can walk the whole main campus. Besides a walking tour of the campus I’d suggest walking up and down Broadway a few blocks to check out Morningside Heights … it’s a unique setting for a campus … some students love it and some hate it. If you are a women I’d suggest crossing Broadway and checking out Barnard also. Have fun!</p>