The 1960's-style northbound pedestrian tunnel <a href="https://en.wikipedia.org/wiki/Aberdeen_(Aberdeen_station)" class="extiw" title="w:Aberdeen (Aberdeen station)">Aberdeen (Aberdeen station)</a>, which used to be a <a href="https://en.wikipedia.org/wiki/Pennsylvania_Railroad" class="extiw" title="w:Pennsylvania Railroad">Pennsylvania Railroad</a> station. The staircases either used to open at both ends of the canopies, or was planned to do so.
<a href="//commons.wikimedia.org/wiki/User:DanTD" title="User:DanTD">DanTD</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>