The Institute is hidden behind a glamour, appearing to mundanes as a run-down cathedral. In fact, it is a majestic Gothic structure. The front gate—a set of church doors—is fortified and protected by a locking mechanism from the inside.
Inside the library is a statue of the angel Raziel. In the lower level is a Portal hidden behind a gate, with an etching of the Mortal Cup, that can be unlocked by turning the attached dial to select the right combination of runes in order. The Institute was built around the Portal.
This arboretum contains a multitude of botanical species, some known only to Shadowhunters.
The Institute has an infirmary—a huge room with an arched wooden ceiling with murals. Additionally, it has several rooms in its residential wing that can hold the hundreds of Shadowhunters who used to seek asylum in the Institute.
- Alec Lightwood
- Isabelle Lightwood
- Jace Wayland
- Clary Fray (temporary)
- Hodge Starkweather (former head and tutor)
- According to Jace, some believe that the Institute was the first building in New York.
- Scenes for the film were filmed inside University of Toronto's Knox College for the interior shots of the film's Institute.