Almost without exception these structures (past and present) are already well covered.
However, structures, sites, and equipment directly associated with major construction are not covered.
The building is a steel framed structure covered in brick.
The structure is covered in 22 domes of different size and shape, which run from the top to the sides.
Note how the structure is covered with weeds to conceal it.
The entire structure was covered with earth and stones, forming a large mound.
It is the most significant structure covered in this material north of San Francisco.
Construction was typical of the period; a wooden structure covered with fabric.
The entire structure is covered with a glass roof.
The entire structure was of wire-braced wood, covered in fabric.