Thomas M.
Yelp
What must have been an awe-inspiring medieval cathedral is now mostly a pile of rubble, with some walls and towers left which are but pale shadows of the building's former glory. Sadly, humans are just as adept at tearing down impressive constructions as they are at building them. :(
The bad news: It still costs UKP 4.50 for you to see what's left. The good news: You can easily avoid paying those UKP 4.50, because the cathedral grounds are open, *gaping*, on all sides. There's a ticket office, but it's located in a remote corner of the ruins, so you can just walk in, around & out without anyone actually noticing that you haven't paid. And if that sounds awful, then, be my guest! I don't think the meagre rest of the building justifies the expenditure. And that's that. And the same goes for St. Andrews Castle (which you can't enter for free).
You can get a good impression of the ruins from my pictures. Yes, there are some intriguing gates and walls left. Yes, they convey the former grandeur of the construction. No, they're not terribly thrilling - given that there are SO many cathedrals in England (York, Worcester, Ely, Gloucester, and the ones in London) that are BOTH awesome AND intact.