high-rise building
A multi-story structure with at least 10 floors which is less than 100 meters tall.
There is no minimum height for a high-rise building; if it is constructed along a hillside with at least 10 floors, it may qualify even if it never rises more than a few meters off the ground. It need not be entirely self-supporting either: for example it can be braced against the side of a cliff.
A high-rise building must be based on solid ground (not floating). It must also be enclosed by a weather-proof facade, otherwise it is classified as an open-air structure.