A basement...
It would be called the "ATTIC".
It is called construction.
It is the foundation of the building.
building collapse ("pancaking") due to high building construction standards. Pancaking results from the moving of rock deep under the ground. This movement is caused by the rubbing of one plate into another.
A building is "un bâtiment" (masc.) in French.
A pantry
A basement is a large room under the ground. A dungeon is a room under the ground.
A circular room in commercial buildings or out buildings is called a round house, in a private house it can be called among other things a turret. A rotunda is a round building or a room in a building, the central hall in the Capitol Building in Washington DC is an excellent example of a rotunda ( round room).
Foyer
The space under a staircase is called a spandrel.
The room under the roof is called an "Attic".
The rotunda is the famous room located under the dome of the Capitol. Brumidi painted a fresco painting on the ceiling.
a room or building where scientific work takes place
It would be called the "ATTIC".
A basement A bunker A cellar A cave A cavern
Its called a basement or a cellar
In a secure room under lock and key