Isambard Kingdom brunel intended to work the South Devon Railway with atmospheric power rather than steam locomotives. This 'atmospheric' engine house was built but never used at Totnes. It was later extended and used as a milk processing plant but, when seen in 2013, was empty although the roof had recently been repaired.
<a href="//commons.wikimedia.org/wiki/User:Geof_Sheppard" title="User:Geof Sheppard">Geof Sheppard</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>