The Corona Tower Research Complex is top secret and unknown to anyone who does not have access to enter the massive facility.

The five floors making up the complex get progressively smaller the farther down you go. A third of Level 1 is underground parking. The twin shafts of the Corona Tower elevator cut through all five levels, but secondary elevators are found throughout the complex. None open directly to the underground garage except two in the research lab section on Level 2 and one providing direct access from the garage to the hospital on Level 4. These are only available to the researchers or hospital staff as both locations require passkey access. Admittance to Levels 2-5 is highly restricted for even those who have received clearance to enter the topmost level of the secretive and highly protected research facility.

Corona City is the colloquial name given to the housing area shared by the successful hybrids and the researchers.

Garik Shayk is housed on Basement Level 2 when Book 2, Inside the Darkness, opens. He eats on Level 1, trains on Level 3, and has been hospitalized on multiple occasions on Level 4. Garik's first exposure to the underground complex is on Level 5 in Book 1, Shattered by Glass, and it is a nightmare he will never forget.