in Liverpool is one of them. It was hit by an incendiary bomb during World War II. It's beautiful but dilapidated - an exquisite shell of a building and you have to sign a disclaimer before you go inside.
It was one of the best spots I visited in Liverpool - quirky and thought-provoking - and hello to the lovely men who were manning the door (was there a door?) and freezing on what must have been one of the coldest days of the year.
Where have you been recently which has made you stop and think?