The 1912 Pavilion -- at the far end of Poe Field -- is a great place for quiet contemplation, especially at night. I made many pilgrimages there during my time on campus, and have made many since, in early June. From the 1912 Pavilion, you can look back up campus to see most of Princeton's stately towers, as well as Cleveland Tower at the Grad College. I even proposed to my wife there -- a sneaky ploy, according to several of my roommates, to get her to come to Reunions. That has worked pretty well, especially now that the P-Rade ends on Poe Field, right near the 1912 Pavilion.
In Response to: The Best Old Place of All: Readers Respond