Before a job in Southsea a while back I was driving round the block looking for a parking space and tripped over this in a new-build close. The close is the site of Southsea East station of which I was completely unaware. Opened in 1885 and only lasting until 1914 the site became an engineering works and then more recently modern housing. I take it that this was the old curtain wall of the station A nice touch I thought and quite unnecessary, so someone stumped the money up. Always good to find something surprising tucked away.
More here: https://en.wikipedia.org/wiki/Southsea_Railway