B-29 Superfortress

Nearly 4,000 B-29s were built from 1943-1946 at a cost of $640,000. Two of the most defining moments — for better or worse — of WWII were carried out by B-29s as they dropped atomic bombs on Hiroshima and Nagasaki. This example sits at the excellent aviation museum at Robins AFB. 

This photograph was captured with a Sony NEX-7.