The University of the Philippines Sunken Garden, popularly called Sunken, is located behind the U.P. Main Library in UP Diliman Campus. This is the venue of the annual UP Fair held every February during the UP Diliman Month. It is also the venue of different field sports activity of the University of the Philippines, Diliman, especially the Latagaw Cup. Softball, baseball, soccer, and frisbee games can be played here.
The Sunken is also the place where ROTC Cadets are ordered to stand at attention for several hours during trainings and parades.