You just don't see many of these any more.

A Quonset hut is a lightweight prefabricated structure
of corrugated steel having a semicircular cross section.
The design was based on the Nissen hut developed
by the British during World War I.
The name comes from their site of first manufacture,
Quonset Point, at the Davisville Naval Construction Battalion Center
in Davisville (a village located within the town of North Kingstown, Rhode Island).

In 1941 the United States Navy needed an all-purpose,
lightweight building that could be shipped anywhere
and assembled without skilled labor. - Wikipedia

Bakersfield, California