The arch hangs above the path leading to the plaza. Naiya lived in this arch, and Mimi usually stood under it. Maggie also stood beneath it near the end of the game. Highyard's arch was also hit by the specter, unfortunately taking a lot of damage.
Chippe guarded this building, which was at the far right of the plaza. Jakes worked here, and it was full of officers, as Professor Layton, Luke and Emmy could hear them all talking behind one of the doors.