The Greasy Chopper is the easiest to view since not the entire building around it is rendered, although both interiors can only be entered by using glitches. Note that not all of these are factually interiors, but are de facto called hidden interiors by fans due to their inaccessibility and secrecy.

There are also some places commonly referred as 'hidden interiors', mainly those used as cutscene scenery. The interiors are only loaded by the game when required, such as during cutscenes. The Hidden Interiors Universe is popular with explorers for also housing normally inaccessible interiors, such as interiors only entered during missions, cutscene scenery and cut content. Since the game only loads the interiors of the heaven the player entered, the normal world won't be rendered and will show mostly empty when the player manages to get out of the interior. Most heavens have multiple interiors stored inside them, allowing the player to explore these if they exit the interior without using the door by using glitches or modifications.

The heaven of the normal world outside is referred to as heaven K. The interiors are grouped into so-called heavenswhich is the new map the game loads when an interior is entered. The function of the Hidden Interiors Universe is to teleport the players from the entrance of the building to the corresponding interior of the building.

Enterable buildings in gta 4