The University posts information about gym and athletic facilities, housing and transportation, a campus-wide schedule of activities, and more on their website. Check there for additional information on reunions.
TigerNet: http://tigernet.princeton.edu
Princeton University: http://www.princeton.edu
Princeton Alumni Weekly: http://www.princeton.edu/~paw/
Annual Giving: http://www.princeton.edu/~ag/
Athletics: http://goprincetontigers.ocsn.com/
Tickets: http://goprincetontigers.ocsn.com/marketplace/tickets/tickets-body.html
Art Museum: http://www.princetonartmuseum.org/
Library: http://libweb.princeton.edu/
Princetoniana: http://alumni.princeton.edu/~ptoniana/index.asp
Alumni Records: http://www.princeton.edu/~alco/ALREC.html