Houses of the Holy
The Song Remains the Same is not just a metaphor for life inside the train drivers' union - ASLEF - it's also the title of a song from the 1973 album by Led Zeppelin - 'Houses of the Holy'.
Not one of their best - in my opinion anyway - but it had an eye-catching album cover based on a book by the famous science fiction writer - Arthur C. Clarke.
The cover is a collage of several photographs which were shot at the Giant's Causeway - in Northern Ireland - which is really worth a visit if you've never been.