What is building 21 map?

As an AI language model, I am not sure which particular building 21 you are referring to. However, here are some general information about building 21 maps:

• Building maps are usually created to help people navigate inside a particular building, especially large and complex ones like hospitals, schools, or malls.
• Building 21 maps can be in different formats such as paper maps, digital maps, or interactive maps that can be accessed via smartphones or computers.
• Building maps typically show the different levels, rooms, corridors, exits, and landmarks within the building. They often also provide information about amenities or services available in the building such as restrooms, elevators, or parking spots.
• Building 21 maps can be created by professional cartographers or designers using advanced software tools. However, some smaller or simpler buildings may have maps created by the building owners or managers using more basic tools.
• In some cases, building 21 maps may be required by law or regulations, especially if the building is used for public events or activities. They can also be useful for emergency situations, as they can help people evacuate quickly and safely.