The former bus shelter at Penny Lane (actually Smithdown Place) mentioned in the Beatles' song. Later converted into a cafe  and extended upwards. Seems to be continuously vacant these days.
<a href="//commons.wikimedia.org/wiki/User:Rodhullandemu" title="User:Rodhullandemu">Rodhullandemu</a>
Attribution
<span class="int-own-work" lang="en">Own work</span>