It is the dwelling place of the Oracle in Thraxon. It has been empty for over one thousand years, waiting for an oracle to arrive. It is kept by the Servants of the Empty Tower, headed by Kathnar, whose family has served the tower for a thousand years.
Legend said the oracle must arrive within a certain time or the tower would fade into nonexistence. The oracle would arrive by dragon.
The tower was sealed by magic but conquered by Katrina Dayyed when she entered the tower and became the oracle in the book Albrek's Tomb.
External guardians include the dwarfs of Thraxon, who made an oath to support the Oracle of the Empty Tower, and Salinor, who can be called by Kat if she is in dire need.