"We'll meet you in the trophy room; that's always unlocked."
-- Draco Malfoy (PS9)
Hogwarts has a trophy room where all the old awards, trophies, statues, cups, plates, shields, and medals are kept in crystal display cases. There is also a list of all the head boys and girls. Draco Malfoy sets the trophy room as the meeting place for the midnight duel (PS9).
"The crystal trophy cases glimmered where the moonlight caught them. Cups, shields, plates, and statues winked silver and gold in the darkness."