The Library of Mystical Creatures is home to the Society of the Collective. The Society is based underneath the library itself. It was once run on the upper half of the library but was moved to the basement after there were incidents of citizens targeting society members.

The attic is a sealed room. It is covered in symbols from the ancient language of Kanaleigh. They were carved into the attic to trap Saira, a commander of the Society who lost control of his mind.

The basement or lower floors of the library are where the headquarters are concealed. The area itself is sealed from the sonder by an ancient charm (same as the attic, but not focused on holding a physical being). The lower floors are accessed through a hidden stairwell. Those stairs lead to a large room with various doors that lead out into the city, further into the library, and to other rooms.